Home / 8,428.59-12,639.51-3,494.88

Finding the Fourth Proportional to 8,428.59, 12,639.51 and 3,494.88

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Solution

The fourth proportional to 8,428.59, 12,639.51 and 3,494.88 is: 5,240.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.59 : 12,639.51 = 3,494.88 : x
  2. Step 2: Convert to fraction form
    8,428.59/12,639.51 = 3,494.88/x
  3. Step 3: Cross multiply
    8,428.59x = 12,639.51 × 3,494.88
  4. Step 4: Simplify right side
    8,428.59x = 44,173,570.71
  5. Step 5: Solve for x
    x = 44,173,570.71/8,428.59
  6. Step 6: Final answer
    x = 5,240.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.