Home / 2,275.68-3,140.32-1,280.96

Finding the Fourth Proportional to 2,275.68, 3,140.32 and 1,280.96

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Solution

The fourth proportional to 2,275.68, 3,140.32 and 1,280.96 is: 1,767.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.68 : 3,140.32 = 1,280.96 : x
  2. Step 2: Convert to fraction form
    2,275.68/3,140.32 = 1,280.96/x
  3. Step 3: Cross multiply
    2,275.68x = 3,140.32 × 1,280.96
  4. Step 4: Simplify right side
    2,275.68x = 4,022,624.31
  5. Step 5: Solve for x
    x = 4,022,624.31/2,275.68
  6. Step 6: Final answer
    x = 1,767.66

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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.