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Finding the Fourth Proportional to 9,888.54, 13,622.76 and 6,899.10

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Solution

The fourth proportional to 9,888.54, 13,622.76 and 6,899.10 is: 9,504.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,888.54 : 13,622.76 = 6,899.10 : x
  2. Step 2: Convert to fraction form
    9,888.54/13,622.76 = 6,899.10/x
  3. Step 3: Cross multiply
    9,888.54x = 13,622.76 × 6,899.10
  4. Step 4: Simplify right side
    9,888.54x = 93,984,783.52
  5. Step 5: Solve for x
    x = 93,984,783.52/9,888.54
  6. Step 6: Final answer
    x = 9,504.41

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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.