Home / 5,240.40-7,854.12-2,641.92

Finding the Fourth Proportional to 5,240.40, 7,854.12 and 2,641.92

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Solution

The fourth proportional to 5,240.40, 7,854.12 and 2,641.92 is: 3,959.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,240.40 : 7,854.12 = 2,641.92 : x
  2. Step 2: Convert to fraction form
    5,240.40/7,854.12 = 2,641.92/x
  3. Step 3: Cross multiply
    5,240.40x = 7,854.12 × 2,641.92
  4. Step 4: Simplify right side
    5,240.40x = 20,749,956.71
  5. Step 5: Solve for x
    x = 20,749,956.71/5,240.40
  6. Step 6: Final answer
    x = 3,959.61

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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.