Home / 9,408.80-12,985.24-5,631.90

Finding the Fourth Proportional to 9,408.80, 12,985.24 and 5,631.90

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Solution

The fourth proportional to 9,408.80, 12,985.24 and 5,631.90 is: 7,772.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,408.80 : 12,985.24 = 5,631.90 : x
  2. Step 2: Convert to fraction form
    9,408.80/12,985.24 = 5,631.90/x
  3. Step 3: Cross multiply
    9,408.80x = 12,985.24 × 5,631.90
  4. Step 4: Simplify right side
    9,408.80x = 73,131,573.16
  5. Step 5: Solve for x
    x = 73,131,573.16/9,408.80
  6. Step 6: Final answer
    x = 7,772.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.