Home / 8,258.24-12,385.68-6,880.40

Finding the Fourth Proportional to 8,258.24, 12,385.68 and 6,880.40

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Solution

The fourth proportional to 8,258.24, 12,385.68 and 6,880.40 is: 10,319.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,258.24 : 12,385.68 = 6,880.40 : x
  2. Step 2: Convert to fraction form
    8,258.24/12,385.68 = 6,880.40/x
  3. Step 3: Cross multiply
    8,258.24x = 12,385.68 × 6,880.40
  4. Step 4: Simplify right side
    8,258.24x = 85,218,432.67
  5. Step 5: Solve for x
    x = 85,218,432.67/8,258.24
  6. Step 6: Final answer
    x = 10,319.20

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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.