Home / 8,276.15-12,420.30-5,501.90

Finding the Fourth Proportional to 8,276.15, 12,420.30 and 5,501.90

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Solution

The fourth proportional to 8,276.15, 12,420.30 and 5,501.90 is: 8,256.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,276.15 : 12,420.30 = 5,501.90 : x
  2. Step 2: Convert to fraction form
    8,276.15/12,420.30 = 5,501.90/x
  3. Step 3: Cross multiply
    8,276.15x = 12,420.30 × 5,501.90
  4. Step 4: Simplify right side
    8,276.15x = 68,335,248.57
  5. Step 5: Solve for x
    x = 68,335,248.57/8,276.15
  6. Step 6: Final answer
    x = 8,256.89

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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.