Home / 5,111.70-7,058.12-4,121.70

Finding the Fourth Proportional to 5,111.70, 7,058.12 and 4,121.70

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Solution

The fourth proportional to 5,111.70, 7,058.12 and 4,121.70 is: 5,691.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,111.70 : 7,058.12 = 4,121.70 : x
  2. Step 2: Convert to fraction form
    5,111.70/7,058.12 = 4,121.70/x
  3. Step 3: Cross multiply
    5,111.70x = 7,058.12 × 4,121.70
  4. Step 4: Simplify right side
    5,111.70x = 29,091,432.60
  5. Step 5: Solve for x
    x = 29,091,432.60/5,111.70
  6. Step 6: Final answer
    x = 5,691.15

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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.