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Finding the Fourth Proportional to 2,707.88, 4,061.81 and 655.88

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Solution

The fourth proportional to 2,707.88, 4,061.81 and 655.88 is: 983.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,707.88 : 4,061.81 = 655.88 : x
  2. Step 2: Convert to fraction form
    2,707.88/4,061.81 = 655.88/x
  3. Step 3: Cross multiply
    2,707.88x = 4,061.81 × 655.88
  4. Step 4: Simplify right side
    2,707.88x = 2,664,041.27
  5. Step 5: Solve for x
    x = 2,664,041.27/2,707.88
  6. Step 6: Final answer
    x = 983.81

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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.