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Finding the Fourth Proportional to 1,681.52, 2,520.30 and 951.80

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Solution

The fourth proportional to 1,681.52, 2,520.30 and 951.80 is: 1,426.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681.52 : 2,520.30 = 951.80 : x
  2. Step 2: Convert to fraction form
    1,681.52/2,520.30 = 951.80/x
  3. Step 3: Cross multiply
    1,681.52x = 2,520.30 × 951.80
  4. Step 4: Simplify right side
    1,681.52x = 2,398,821.54
  5. Step 5: Solve for x
    x = 2,398,821.54/1,681.52
  6. Step 6: Final answer
    x = 1,426.58

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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.