Home / 8,421.30-12,631.90-2,498.64

Finding the Fourth Proportional to 8,421.30, 12,631.90 and 2,498.64

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Solution

The fourth proportional to 8,421.30, 12,631.90 and 2,498.64 is: 3,747.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.30 : 12,631.90 = 2,498.64 : x
  2. Step 2: Convert to fraction form
    8,421.30/12,631.90 = 2,498.64/x
  3. Step 3: Cross multiply
    8,421.30x = 12,631.90 × 2,498.64
  4. Step 4: Simplify right side
    8,421.30x = 31,562,570.62
  5. Step 5: Solve for x
    x = 31,562,570.62/8,421.30
  6. Step 6: Final answer
    x = 3,747.95

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Double scale
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Similar ratio
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1.5x scale

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.