Home / 2,280.81-3,422.12-1,125.75

Finding the Fourth Proportional to 2,280.81, 3,422.12 and 1,125.75

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Solution

The fourth proportional to 2,280.81, 3,422.12 and 1,125.75 is: 1,689.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.81 : 3,422.12 = 1,125.75 : x
  2. Step 2: Convert to fraction form
    2,280.81/3,422.12 = 1,125.75/x
  3. Step 3: Cross multiply
    2,280.81x = 3,422.12 × 1,125.75
  4. Step 4: Simplify right side
    2,280.81x = 3,852,445.96
  5. Step 5: Solve for x
    x = 3,852,445.96/2,280.81
  6. Step 6: Final answer
    x = 1,689.07

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1.5x scale

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.