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Finding the Fourth Proportional to 3,098.30, 4,648.24 and 877.13

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Solution

The fourth proportional to 3,098.30, 4,648.24 and 877.13 is: 1,315.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,098.30 : 4,648.24 = 877.13 : x
  2. Step 2: Convert to fraction form
    3,098.30/4,648.24 = 877.13/x
  3. Step 3: Cross multiply
    3,098.30x = 4,648.24 × 877.13
  4. Step 4: Simplify right side
    3,098.30x = 4,077,123.47
  5. Step 5: Solve for x
    x = 4,077,123.47/3,098.30
  6. Step 6: Final answer
    x = 1,315.92

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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.