Home / 5,125.16-7,072.76-2,887.07

Finding the Fourth Proportional to 5,125.16, 7,072.76 and 2,887.07

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Solution

The fourth proportional to 5,125.16, 7,072.76 and 2,887.07 is: 3,984.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.16 : 7,072.76 = 2,887.07 : x
  2. Step 2: Convert to fraction form
    5,125.16/7,072.76 = 2,887.07/x
  3. Step 3: Cross multiply
    5,125.16x = 7,072.76 × 2,887.07
  4. Step 4: Simplify right side
    5,125.16x = 20,419,556.46
  5. Step 5: Solve for x
    x = 20,419,556.46/5,125.16
  6. Step 6: Final answer
    x = 3,984.18

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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.