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Finding the Fourth Proportional to 3,876.07, 5,814.50 and 1,242.92

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Solution

The fourth proportional to 3,876.07, 5,814.50 and 1,242.92 is: 1,864.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.07 : 5,814.50 = 1,242.92 : x
  2. Step 2: Convert to fraction form
    3,876.07/5,814.50 = 1,242.92/x
  3. Step 3: Cross multiply
    3,876.07x = 5,814.50 × 1,242.92
  4. Step 4: Simplify right side
    3,876.07x = 7,226,952.13
  5. Step 5: Solve for x
    x = 7,226,952.13/3,876.07
  6. Step 6: Final answer
    x = 1,864.51

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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.