Home / 3,187.29-4,387.54-2,765.16

Finding the Fourth Proportional to 3,187.29, 4,387.54 and 2,765.16

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Solution

The fourth proportional to 3,187.29, 4,387.54 and 2,765.16 is: 3,806.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.29 : 4,387.54 = 2,765.16 : x
  2. Step 2: Convert to fraction form
    3,187.29/4,387.54 = 2,765.16/x
  3. Step 3: Cross multiply
    3,187.29x = 4,387.54 × 2,765.16
  4. Step 4: Simplify right side
    3,187.29x = 12,132,250.11
  5. Step 5: Solve for x
    x = 12,132,250.11/3,187.29
  6. Step 6: Final answer
    x = 3,806.45

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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.