Home / 8,320.14-12,480.68-3,126.06

Finding the Fourth Proportional to 8,320.14, 12,480.68 and 3,126.06

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Solution

The fourth proportional to 8,320.14, 12,480.68 and 3,126.06 is: 4,689.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.14 : 12,480.68 = 3,126.06 : x
  2. Step 2: Convert to fraction form
    8,320.14/12,480.68 = 3,126.06/x
  3. Step 3: Cross multiply
    8,320.14x = 12,480.68 × 3,126.06
  4. Step 4: Simplify right side
    8,320.14x = 39,015,354.52
  5. Step 5: Solve for x
    x = 39,015,354.52/8,320.14
  6. Step 6: Final answer
    x = 4,689.27

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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.