Home / 2,280.66-3,147.23-1,285.88

Finding the Fourth Proportional to 2,280.66, 3,147.23 and 1,285.88

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Solution

The fourth proportional to 2,280.66, 3,147.23 and 1,285.88 is: 1,774.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.66 : 3,147.23 = 1,285.88 : x
  2. Step 2: Convert to fraction form
    2,280.66/3,147.23 = 1,285.88/x
  3. Step 3: Cross multiply
    2,280.66x = 3,147.23 × 1,285.88
  4. Step 4: Simplify right side
    2,280.66x = 4,046,960.11
  5. Step 5: Solve for x
    x = 4,046,960.11/2,280.66
  6. Step 6: Final answer
    x = 1,774.47

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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.