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Finding the Fourth Proportional to 7,068.72, 9,715.08 and 6,871.92

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Solution

The fourth proportional to 7,068.72, 9,715.08 and 6,871.92 is: 9,444.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,068.72 : 9,715.08 = 6,871.92 : x
  2. Step 2: Convert to fraction form
    7,068.72/9,715.08 = 6,871.92/x
  3. Step 3: Cross multiply
    7,068.72x = 9,715.08 × 6,871.92
  4. Step 4: Simplify right side
    7,068.72x = 66,761,252.55
  5. Step 5: Solve for x
    x = 66,761,252.55/7,068.72
  6. Step 6: Final answer
    x = 9,444.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.