Home / 8,320.38-12,412.14-7,723.74

Finding the Fourth Proportional to 8,320.38, 12,412.14 and 7,723.74

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Solution

The fourth proportional to 8,320.38, 12,412.14 and 7,723.74 is: 11,522.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.38 : 12,412.14 = 7,723.74 : x
  2. Step 2: Convert to fraction form
    8,320.38/12,412.14 = 7,723.74/x
  3. Step 3: Cross multiply
    8,320.38x = 12,412.14 × 7,723.74
  4. Step 4: Simplify right side
    8,320.38x = 95,868,142.20
  5. Step 5: Solve for x
    x = 95,868,142.20/8,320.38
  6. Step 6: Final answer
    x = 11,522.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.