Home / 8,290.08-12,440.58-3,908.78

Finding the Fourth Proportional to 8,290.08, 12,440.58 and 3,908.78

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Solution

The fourth proportional to 8,290.08, 12,440.58 and 3,908.78 is: 5,865.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,290.08 : 12,440.58 = 3,908.78 : x
  2. Step 2: Convert to fraction form
    8,290.08/12,440.58 = 3,908.78/x
  3. Step 3: Cross multiply
    8,290.08x = 12,440.58 × 3,908.78
  4. Step 4: Simplify right side
    8,290.08x = 48,627,490.29
  5. Step 5: Solve for x
    x = 48,627,490.29/8,290.08
  6. Step 6: Final answer
    x = 5,865.74

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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.