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Finding the Fourth Proportional to 2,658.84, 3,988.26 and 926.52

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Solution

The fourth proportional to 2,658.84, 3,988.26 and 926.52 is: 1,389.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,658.84 : 3,988.26 = 926.52 : x
  2. Step 2: Convert to fraction form
    2,658.84/3,988.26 = 926.52/x
  3. Step 3: Cross multiply
    2,658.84x = 3,988.26 × 926.52
  4. Step 4: Simplify right side
    2,658.84x = 3,695,202.66
  5. Step 5: Solve for x
    x = 3,695,202.66/2,658.84
  6. Step 6: Final answer
    x = 1,389.78

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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.