Home / 3,423.62-4,724.65-1,931.61

Finding the Fourth Proportional to 3,423.62, 4,724.65 and 1,931.61

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Solution

The fourth proportional to 3,423.62, 4,724.65 and 1,931.61 is: 2,665.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,423.62 : 4,724.65 = 1,931.61 : x
  2. Step 2: Convert to fraction form
    3,423.62/4,724.65 = 1,931.61/x
  3. Step 3: Cross multiply
    3,423.62x = 4,724.65 × 1,931.61
  4. Step 4: Simplify right side
    3,423.62x = 9,126,181.19
  5. Step 5: Solve for x
    x = 9,126,181.19/3,423.62
  6. Step 6: Final answer
    x = 2,665.65

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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.