Home / 3,909.10-5,864.29-1,275.84

Finding the Fourth Proportional to 3,909.10, 5,864.29 and 1,275.84

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Solution

The fourth proportional to 3,909.10, 5,864.29 and 1,275.84 is: 1,913.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,909.10 : 5,864.29 = 1,275.84 : x
  2. Step 2: Convert to fraction form
    3,909.10/5,864.29 = 1,275.84/x
  3. Step 3: Cross multiply
    3,909.10x = 5,864.29 × 1,275.84
  4. Step 4: Simplify right side
    3,909.10x = 7,481,897.35
  5. Step 5: Solve for x
    x = 7,481,897.35/3,909.10
  6. Step 6: Final answer
    x = 1,913.97

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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.