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Finding the Fourth Proportional to 7,812.93, 10,779.71 and 5,020.05

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Solution

The fourth proportional to 7,812.93, 10,779.71 and 5,020.05 is: 6,926.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812.93 : 10,779.71 = 5,020.05 : x
  2. Step 2: Convert to fraction form
    7,812.93/10,779.71 = 5,020.05/x
  3. Step 3: Cross multiply
    7,812.93x = 10,779.71 × 5,020.05
  4. Step 4: Simplify right side
    7,812.93x = 54,114,658.09
  5. Step 5: Solve for x
    x = 54,114,658.09/7,812.93
  6. Step 6: Final answer
    x = 6,926.30

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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.