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Finding the Fourth Proportional to 6,653.46, 9,981.18 and 1,972.91

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Solution

The fourth proportional to 6,653.46, 9,981.18 and 1,972.91 is: 2,959.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,653.46 : 9,981.18 = 1,972.91 : x
  2. Step 2: Convert to fraction form
    6,653.46/9,981.18 = 1,972.91/x
  3. Step 3: Cross multiply
    6,653.46x = 9,981.18 × 1,972.91
  4. Step 4: Simplify right side
    6,653.46x = 19,691,996.95
  5. Step 5: Solve for x
    x = 19,691,996.95/6,653.46
  6. Step 6: Final answer
    x = 2,959.66

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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.