Home / 6,405.52-8,839.68-3,921.52

Finding the Fourth Proportional to 6,405.52, 8,839.68 and 3,921.52

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Solution

The fourth proportional to 6,405.52, 8,839.68 and 3,921.52 is: 5,411.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,405.52 : 8,839.68 = 3,921.52 : x
  2. Step 2: Convert to fraction form
    6,405.52/8,839.68 = 3,921.52/x
  3. Step 3: Cross multiply
    6,405.52x = 8,839.68 × 3,921.52
  4. Step 4: Simplify right side
    6,405.52x = 34,664,981.91
  5. Step 5: Solve for x
    x = 34,664,981.91/6,405.52
  6. Step 6: Final answer
    x = 5,411.74

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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.