Home / 5,125.36-7,071.84-2,887.12

Finding the Fourth Proportional to 5,125.36, 7,071.84 and 2,887.12

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Solution

The fourth proportional to 5,125.36, 7,071.84 and 2,887.12 is: 3,983.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.36 : 7,071.84 = 2,887.12 : x
  2. Step 2: Convert to fraction form
    5,125.36/7,071.84 = 2,887.12/x
  3. Step 3: Cross multiply
    5,125.36x = 7,071.84 × 2,887.12
  4. Step 4: Simplify right side
    5,125.36x = 20,417,250.70
  5. Step 5: Solve for x
    x = 20,417,250.70/5,125.36
  6. Step 6: Final answer
    x = 3,983.57

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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.