Home / 5,715.29-7,887.35-3,197.39

Finding the Fourth Proportional to 5,715.29, 7,887.35 and 3,197.39

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Solution

The fourth proportional to 5,715.29, 7,887.35 and 3,197.39 is: 4,412.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,715.29 : 7,887.35 = 3,197.39 : x
  2. Step 2: Convert to fraction form
    5,715.29/7,887.35 = 3,197.39/x
  3. Step 3: Cross multiply
    5,715.29x = 7,887.35 × 3,197.39
  4. Step 4: Simplify right side
    5,715.29x = 25,218,934.02
  5. Step 5: Solve for x
    x = 25,218,934.02/5,715.29
  6. Step 6: Final answer
    x = 4,412.54

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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.