Home / 8,720.08-13,080.90-2,480.20

Finding the Fourth Proportional to 8,720.08, 13,080.90 and 2,480.20

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Solution

The fourth proportional to 8,720.08, 13,080.90 and 2,480.20 is: 3,720.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.08 : 13,080.90 = 2,480.20 : x
  2. Step 2: Convert to fraction form
    8,720.08/13,080.90 = 2,480.20/x
  3. Step 3: Cross multiply
    8,720.08x = 13,080.90 × 2,480.20
  4. Step 4: Simplify right side
    8,720.08x = 32,443,248.18
  5. Step 5: Solve for x
    x = 32,443,248.18/8,720.08
  6. Step 6: Final answer
    x = 3,720.52

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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.