Home / 5,115.93-7,061.27-3,127.65

Finding the Fourth Proportional to 5,115.93, 7,061.27 and 3,127.65

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Solution

The fourth proportional to 5,115.93, 7,061.27 and 3,127.65 is: 4,316.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.93 : 7,061.27 = 3,127.65 : x
  2. Step 2: Convert to fraction form
    5,115.93/7,061.27 = 3,127.65/x
  3. Step 3: Cross multiply
    5,115.93x = 7,061.27 × 3,127.65
  4. Step 4: Simplify right side
    5,115.93x = 22,085,165.48
  5. Step 5: Solve for x
    x = 22,085,165.48/5,115.93
  6. Step 6: Final answer
    x = 4,316.94

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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.