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Finding the Fourth Proportional to 2,007.13, 3,011.77 and 981.13

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Solution

The fourth proportional to 2,007.13, 3,011.77 and 981.13 is: 1,472.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,007.13 : 3,011.77 = 981.13 : x
  2. Step 2: Convert to fraction form
    2,007.13/3,011.77 = 981.13/x
  3. Step 3: Cross multiply
    2,007.13x = 3,011.77 × 981.13
  4. Step 4: Simplify right side
    2,007.13x = 2,954,937.90
  5. Step 5: Solve for x
    x = 2,954,937.90/2,007.13
  6. Step 6: Final answer
    x = 1,472.22

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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.