Home / 2,775.28-4,162.56-1,315.36

Finding the Fourth Proportional to 2,775.28, 4,162.56 and 1,315.36

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Solution

The fourth proportional to 2,775.28, 4,162.56 and 1,315.36 is: 1,972.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.28 : 4,162.56 = 1,315.36 : x
  2. Step 2: Convert to fraction form
    2,775.28/4,162.56 = 1,315.36/x
  3. Step 3: Cross multiply
    2,775.28x = 4,162.56 × 1,315.36
  4. Step 4: Simplify right side
    2,775.28x = 5,475,264.92
  5. Step 5: Solve for x
    x = 5,475,264.92/2,775.28
  6. Step 6: Final answer
    x = 1,972.87

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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.