Home / 2,285.85-3,154.25-1,291.12

Finding the Fourth Proportional to 2,285.85, 3,154.25 and 1,291.12

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Solution

The fourth proportional to 2,285.85, 3,154.25 and 1,291.12 is: 1,781.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.85 : 3,154.25 = 1,291.12 : x
  2. Step 2: Convert to fraction form
    2,285.85/3,154.25 = 1,291.12/x
  3. Step 3: Cross multiply
    2,285.85x = 3,154.25 × 1,291.12
  4. Step 4: Simplify right side
    2,285.85x = 4,072,510.60
  5. Step 5: Solve for x
    x = 4,072,510.60/2,285.85
  6. Step 6: Final answer
    x = 1,781.61

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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.