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Finding the Fourth Proportional to 7,957.32, 11,865.90 and 7,403.28

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Solution

The fourth proportional to 7,957.32, 11,865.90 and 7,403.28 is: 11,039.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,957.32 : 11,865.90 = 7,403.28 : x
  2. Step 2: Convert to fraction form
    7,957.32/11,865.90 = 7,403.28/x
  3. Step 3: Cross multiply
    7,957.32x = 11,865.90 × 7,403.28
  4. Step 4: Simplify right side
    7,957.32x = 87,846,580.15
  5. Step 5: Solve for x
    x = 87,846,580.15/7,957.32
  6. Step 6: Final answer
    x = 11,039.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.