Home / 8,990.28-13,485.55-3,443.91

Finding the Fourth Proportional to 8,990.28, 13,485.55 and 3,443.91

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Solution

The fourth proportional to 8,990.28, 13,485.55 and 3,443.91 is: 5,165.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990.28 : 13,485.55 = 3,443.91 : x
  2. Step 2: Convert to fraction form
    8,990.28/13,485.55 = 3,443.91/x
  3. Step 3: Cross multiply
    8,990.28x = 13,485.55 × 3,443.91
  4. Step 4: Simplify right side
    8,990.28x = 46,442,935.85
  5. Step 5: Solve for x
    x = 46,442,935.85/8,990.28
  6. Step 6: Final answer
    x = 5,165.91

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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.