Home / 3,432.18-4,739.78-2,931.90

Finding the Fourth Proportional to 3,432.18, 4,739.78 and 2,931.90

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Solution

The fourth proportional to 3,432.18, 4,739.78 and 2,931.90 is: 4,048.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,432.18 : 4,739.78 = 2,931.90 : x
  2. Step 2: Convert to fraction form
    3,432.18/4,739.78 = 2,931.90/x
  3. Step 3: Cross multiply
    3,432.18x = 4,739.78 × 2,931.90
  4. Step 4: Simplify right side
    3,432.18x = 13,896,546.32
  5. Step 5: Solve for x
    x = 13,896,546.32/3,432.18
  6. Step 6: Final answer
    x = 4,048.90

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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.