Home / 8,720.28-13,079.16-2,877.12

Finding the Fourth Proportional to 8,720.28, 13,079.16 and 2,877.12

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Solution

The fourth proportional to 8,720.28, 13,079.16 and 2,877.12 is: 4,315.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.28 : 13,079.16 = 2,877.12 : x
  2. Step 2: Convert to fraction form
    8,720.28/13,079.16 = 2,877.12/x
  3. Step 3: Cross multiply
    8,720.28x = 13,079.16 × 2,877.12
  4. Step 4: Simplify right side
    8,720.28x = 37,630,312.82
  5. Step 5: Solve for x
    x = 37,630,312.82/8,720.28
  6. Step 6: Final answer
    x = 4,315.26

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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.