Home / 3,939,867.20-5,437,862.10-2,488,639.61

Finding the Fourth Proportional to 3,939,867.20, 5,437,862.10 and 2,488,639.61

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Solution

The fourth proportional to 3,939,867.20, 5,437,862.10 and 2,488,639.61 is: 3,434,856.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939,867.20 : 5,437,862.10 = 2,488,639.61 : x
  2. Step 2: Convert to fraction form
    3,939,867.20/5,437,862.10 = 2,488,639.61/x
  3. Step 3: Cross multiply
    3,939,867.20x = 5,437,862.10 × 2,488,639.61
  4. Step 4: Simplify right side
    3,939,867.20x = 13,532,879,029,372.43
  5. Step 5: Solve for x
    x = 13,532,879,029,372.43/3,939,867.20
  6. Step 6: Final answer
    x = 3,434,856.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.