Home / 5,740.32-7,920.45-3,753.81

Finding the Fourth Proportional to 5,740.32, 7,920.45 and 3,753.81

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Solution

The fourth proportional to 5,740.32, 7,920.45 and 3,753.81 is: 5,179.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,740.32 : 7,920.45 = 3,753.81 : x
  2. Step 2: Convert to fraction form
    5,740.32/7,920.45 = 3,753.81/x
  3. Step 3: Cross multiply
    5,740.32x = 7,920.45 × 3,753.81
  4. Step 4: Simplify right side
    5,740.32x = 29,731,864.41
  5. Step 5: Solve for x
    x = 29,731,864.41/5,740.32
  6. Step 6: Final answer
    x = 5,179.48

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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.