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Finding the Fourth Proportional to 2,314.98, 3,472.74 and 928.80

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Solution

The fourth proportional to 2,314.98, 3,472.74 and 928.80 is: 1,393.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,314.98 : 3,472.74 = 928.80 : x
  2. Step 2: Convert to fraction form
    2,314.98/3,472.74 = 928.80/x
  3. Step 3: Cross multiply
    2,314.98x = 3,472.74 × 928.80
  4. Step 4: Simplify right side
    2,314.98x = 3,225,480.91
  5. Step 5: Solve for x
    x = 3,225,480.91/2,314.98
  6. Step 6: Final answer
    x = 1,393.31

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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.