Home / 9,121.75-12,583.15-6,132.45

Finding the Fourth Proportional to 9,121.75, 12,583.15 and 6,132.45

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Solution

The fourth proportional to 9,121.75, 12,583.15 and 6,132.45 is: 8,459.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.75 : 12,583.15 = 6,132.45 : x
  2. Step 2: Convert to fraction form
    9,121.75/12,583.15 = 6,132.45/x
  3. Step 3: Cross multiply
    9,121.75x = 12,583.15 × 6,132.45
  4. Step 4: Simplify right side
    9,121.75x = 77,165,538.22
  5. Step 5: Solve for x
    x = 77,165,538.22/9,121.75
  6. Step 6: Final answer
    x = 8,459.51

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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.