Home / 7,891.30-11,836.95-4,972.90

Finding the Fourth Proportional to 7,891.30, 11,836.95 and 4,972.90

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Solution

The fourth proportional to 7,891.30, 11,836.95 and 4,972.90 is: 7,459.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,891.30 : 11,836.95 = 4,972.90 : x
  2. Step 2: Convert to fraction form
    7,891.30/11,836.95 = 4,972.90/x
  3. Step 3: Cross multiply
    7,891.30x = 11,836.95 × 4,972.90
  4. Step 4: Simplify right side
    7,891.30x = 58,863,968.66
  5. Step 5: Solve for x
    x = 58,863,968.66/7,891.30
  6. Step 6: Final answer
    x = 7,459.35

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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.