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Finding the Fourth Proportional to 7,287.68, 10,056.96 and 4,143.68

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Solution

The fourth proportional to 7,287.68, 10,056.96 and 4,143.68 is: 5,718.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,287.68 : 10,056.96 = 4,143.68 : x
  2. Step 2: Convert to fraction form
    7,287.68/10,056.96 = 4,143.68/x
  3. Step 3: Cross multiply
    7,287.68x = 10,056.96 × 4,143.68
  4. Step 4: Simplify right side
    7,287.68x = 41,672,824.01
  5. Step 5: Solve for x
    x = 41,672,824.01/7,287.68
  6. Step 6: Final answer
    x = 5,718.26

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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.