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Finding the Fourth Proportional to 7,779.69, 10,736.10 and 4,243.10

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Solution

The fourth proportional to 7,779.69, 10,736.10 and 4,243.10 is: 5,855.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,779.69 : 10,736.10 = 4,243.10 : x
  2. Step 2: Convert to fraction form
    7,779.69/10,736.10 = 4,243.10/x
  3. Step 3: Cross multiply
    7,779.69x = 10,736.10 × 4,243.10
  4. Step 4: Simplify right side
    7,779.69x = 45,554,292.23
  5. Step 5: Solve for x
    x = 45,554,292.23/7,779.69
  6. Step 6: Final answer
    x = 5,855.54

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.