Home / 7,447.20-11,165.76-3,554.88

Finding the Fourth Proportional to 7,447.20, 11,165.76 and 3,554.88

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Solution

The fourth proportional to 7,447.20, 11,165.76 and 3,554.88 is: 5,329.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,447.20 : 11,165.76 = 3,554.88 : x
  2. Step 2: Convert to fraction form
    7,447.20/11,165.76 = 3,554.88/x
  3. Step 3: Cross multiply
    7,447.20x = 11,165.76 × 3,554.88
  4. Step 4: Simplify right side
    7,447.20x = 39,692,936.91
  5. Step 5: Solve for x
    x = 39,692,936.91/7,447.20
  6. Step 6: Final answer
    x = 5,329.91

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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.