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Finding the Fourth Proportional to 7,216.57, 9,957.22 and 4,071.61

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Solution

The fourth proportional to 7,216.57, 9,957.22 and 4,071.61 is: 5,617.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,216.57 : 9,957.22 = 4,071.61 : x
  2. Step 2: Convert to fraction form
    7,216.57/9,957.22 = 4,071.61/x
  3. Step 3: Cross multiply
    7,216.57x = 9,957.22 × 4,071.61
  4. Step 4: Simplify right side
    7,216.57x = 40,541,916.52
  5. Step 5: Solve for x
    x = 40,541,916.52/7,216.57
  6. Step 6: Final answer
    x = 5,617.89

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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.