Home / 2,717.28-4,075.92-985.50

Finding the Fourth Proportional to 2,717.28, 4,075.92 and 985.50

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Solution

The fourth proportional to 2,717.28, 4,075.92 and 985.50 is: 1,478.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,717.28 : 4,075.92 = 985.50 : x
  2. Step 2: Convert to fraction form
    2,717.28/4,075.92 = 985.50/x
  3. Step 3: Cross multiply
    2,717.28x = 4,075.92 × 985.50
  4. Step 4: Simplify right side
    2,717.28x = 4,016,819.16
  5. Step 5: Solve for x
    x = 4,016,819.16/2,717.28
  6. Step 6: Final answer
    x = 1,478.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.