Home / 8,980.88-12,380.75-6,320.03

Finding the Fourth Proportional to 8,980.88, 12,380.75 and 6,320.03

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Solution

The fourth proportional to 8,980.88, 12,380.75 and 6,320.03 is: 8,712.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,980.88 : 12,380.75 = 6,320.03 : x
  2. Step 2: Convert to fraction form
    8,980.88/12,380.75 = 6,320.03/x
  3. Step 3: Cross multiply
    8,980.88x = 12,380.75 × 6,320.03
  4. Step 4: Simplify right side
    8,980.88x = 78,246,711.42
  5. Step 5: Solve for x
    x = 78,246,711.42/8,980.88
  6. Step 6: Final answer
    x = 8,712.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.