Home / 2,285.52-3,153.96-1,290.90

Finding the Fourth Proportional to 2,285.52, 3,153.96 and 1,290.90

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Solution

The fourth proportional to 2,285.52, 3,153.96 and 1,290.90 is: 1,781.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.52 : 3,153.96 = 1,290.90 : x
  2. Step 2: Convert to fraction form
    2,285.52/3,153.96 = 1,290.90/x
  3. Step 3: Cross multiply
    2,285.52x = 3,153.96 × 1,290.90
  4. Step 4: Simplify right side
    2,285.52x = 4,071,446.96
  5. Step 5: Solve for x
    x = 4,071,446.96/2,285.52
  6. Step 6: Final answer
    x = 1,781.41

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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.