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Finding the Fourth Proportional to 2,542.41, 3,813.86 and 876.66

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Solution

The fourth proportional to 2,542.41, 3,813.86 and 876.66 is: 1,315.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,542.41 : 3,813.86 = 876.66 : x
  2. Step 2: Convert to fraction form
    2,542.41/3,813.86 = 876.66/x
  3. Step 3: Cross multiply
    2,542.41x = 3,813.86 × 876.66
  4. Step 4: Simplify right side
    2,542.41x = 3,343,471.71
  5. Step 5: Solve for x
    x = 3,343,471.71/2,542.41
  6. Step 6: Final answer
    x = 1,315.08

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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.