Home / 8,631.52-12,947.04-3,698.68

Finding the Fourth Proportional to 8,631.52, 12,947.04 and 3,698.68

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Solution

The fourth proportional to 8,631.52, 12,947.04 and 3,698.68 is: 5,547.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.52 : 12,947.04 = 3,698.68 : x
  2. Step 2: Convert to fraction form
    8,631.52/12,947.04 = 3,698.68/x
  3. Step 3: Cross multiply
    8,631.52x = 12,947.04 × 3,698.68
  4. Step 4: Simplify right side
    8,631.52x = 47,886,957.91
  5. Step 5: Solve for x
    x = 47,886,957.91/8,631.52
  6. Step 6: Final answer
    x = 5,547.92

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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.