Home / 8,320.68-12,480.98-2,477.30

Finding the Fourth Proportional to 8,320.68, 12,480.98 and 2,477.30

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Solution

The fourth proportional to 8,320.68, 12,480.98 and 2,477.30 is: 3,715.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.68 : 12,480.98 = 2,477.30 : x
  2. Step 2: Convert to fraction form
    8,320.68/12,480.98 = 2,477.30/x
  3. Step 3: Cross multiply
    8,320.68x = 12,480.98 × 2,477.30
  4. Step 4: Simplify right side
    8,320.68x = 30,919,131.75
  5. Step 5: Solve for x
    x = 30,919,131.75/8,320.68
  6. Step 6: Final answer
    x = 3,715.94

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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.