Home / 6,138.30-9,207.45-1,521.30

Finding the Fourth Proportional to 6,138.30, 9,207.45 and 1,521.30

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Solution

The fourth proportional to 6,138.30, 9,207.45 and 1,521.30 is: 2,281.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,138.30 : 9,207.45 = 1,521.30 : x
  2. Step 2: Convert to fraction form
    6,138.30/9,207.45 = 1,521.30/x
  3. Step 3: Cross multiply
    6,138.30x = 9,207.45 × 1,521.30
  4. Step 4: Simplify right side
    6,138.30x = 14,007,293.69
  5. Step 5: Solve for x
    x = 14,007,293.69/6,138.30
  6. Step 6: Final answer
    x = 2,281.95

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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.