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Finding the Fourth Proportional to 3,981.79, 5,972.01 and 1,060.12

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Solution

The fourth proportional to 3,981.79, 5,972.01 and 1,060.12 is: 1,590.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.79 : 5,972.01 = 1,060.12 : x
  2. Step 2: Convert to fraction form
    3,981.79/5,972.01 = 1,060.12/x
  3. Step 3: Cross multiply
    3,981.79x = 5,972.01 × 1,060.12
  4. Step 4: Simplify right side
    3,981.79x = 6,331,047.24
  5. Step 5: Solve for x
    x = 6,331,047.24/3,981.79
  6. Step 6: Final answer
    x = 1,590.00

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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.