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Finding the Fourth Proportional to 7,192.80, 9,925.36 and 5,305.39

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Solution

The fourth proportional to 7,192.80, 9,925.36 and 5,305.39 is: 7,320.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,192.80 : 9,925.36 = 5,305.39 : x
  2. Step 2: Convert to fraction form
    7,192.80/9,925.36 = 5,305.39/x
  3. Step 3: Cross multiply
    7,192.80x = 9,925.36 × 5,305.39
  4. Step 4: Simplify right side
    7,192.80x = 52,657,867.61
  5. Step 5: Solve for x
    x = 52,657,867.61/7,192.80
  6. Step 6: Final answer
    x = 7,320.91

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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.