Home / 5,115.35-7,058.69-3,127.92

Finding the Fourth Proportional to 5,115.35, 7,058.69 and 3,127.92

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Solution

The fourth proportional to 5,115.35, 7,058.69 and 3,127.92 is: 4,316.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.35 : 7,058.69 = 3,127.92 : x
  2. Step 2: Convert to fraction form
    5,115.35/7,058.69 = 3,127.92/x
  3. Step 3: Cross multiply
    5,115.35x = 7,058.69 × 3,127.92
  4. Step 4: Simplify right side
    5,115.35x = 22,079,004.84
  5. Step 5: Solve for x
    x = 22,079,004.84/5,115.35
  6. Step 6: Final answer
    x = 4,316.22

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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.