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Finding the Fourth Proportional to 2,605.94, 3,908.88 and 658.13

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Solution

The fourth proportional to 2,605.94, 3,908.88 and 658.13 is: 987.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,605.94 : 3,908.88 = 658.13 : x
  2. Step 2: Convert to fraction form
    2,605.94/3,908.88 = 658.13/x
  3. Step 3: Cross multiply
    2,605.94x = 3,908.88 × 658.13
  4. Step 4: Simplify right side
    2,605.94x = 2,572,531.65
  5. Step 5: Solve for x
    x = 2,572,531.65/2,605.94
  6. Step 6: Final answer
    x = 987.18

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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.