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Finding the Fourth Proportional to 7,644.81, 10,549.17 and 4,287.18

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Solution

The fourth proportional to 7,644.81, 10,549.17 and 4,287.18 is: 5,915.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,644.81 : 10,549.17 = 4,287.18 : x
  2. Step 2: Convert to fraction form
    7,644.81/10,549.17 = 4,287.18/x
  3. Step 3: Cross multiply
    7,644.81x = 10,549.17 × 4,287.18
  4. Step 4: Simplify right side
    7,644.81x = 45,226,190.64
  5. Step 5: Solve for x
    x = 45,226,190.64/7,644.81
  6. Step 6: Final answer
    x = 5,915.93

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Double scale
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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.