Home / 9,121.90-12,588.19-4,930.15

Finding the Fourth Proportional to 9,121.90, 12,588.19 and 4,930.15

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Solution

The fourth proportional to 9,121.90, 12,588.19 and 4,930.15 is: 6,803.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.90 : 12,588.19 = 4,930.15 : x
  2. Step 2: Convert to fraction form
    9,121.90/12,588.19 = 4,930.15/x
  3. Step 3: Cross multiply
    9,121.90x = 12,588.19 × 4,930.15
  4. Step 4: Simplify right side
    9,121.90x = 62,061,664.93
  5. Step 5: Solve for x
    x = 62,061,664.93/9,121.90
  6. Step 6: Final answer
    x = 6,803.59

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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.