Home / 8,378.79-12,565.22-2,454.05

Finding the Fourth Proportional to 8,378.79, 12,565.22 and 2,454.05

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Solution

The fourth proportional to 8,378.79, 12,565.22 and 2,454.05 is: 3,680.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,378.79 : 12,565.22 = 2,454.05 : x
  2. Step 2: Convert to fraction form
    8,378.79/12,565.22 = 2,454.05/x
  3. Step 3: Cross multiply
    8,378.79x = 12,565.22 × 2,454.05
  4. Step 4: Simplify right side
    8,378.79x = 30,835,603.04
  5. Step 5: Solve for x
    x = 30,835,603.04/8,378.79
  6. Step 6: Final answer
    x = 3,680.20

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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.