Home / 8,890.92-13,337.66-3,420.20

Finding the Fourth Proportional to 8,890.92, 13,337.66 and 3,420.20

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Solution

The fourth proportional to 8,890.92, 13,337.66 and 3,420.20 is: 5,130.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,890.92 : 13,337.66 = 3,420.20 : x
  2. Step 2: Convert to fraction form
    8,890.92/13,337.66 = 3,420.20/x
  3. Step 3: Cross multiply
    8,890.92x = 13,337.66 × 3,420.20
  4. Step 4: Simplify right side
    8,890.92x = 45,617,464.73
  5. Step 5: Solve for x
    x = 45,617,464.73/8,890.92
  6. Step 6: Final answer
    x = 5,130.79

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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.