Home / 2,285.13-3,153.51-1,276.79

Finding the Fourth Proportional to 2,285.13, 3,153.51 and 1,276.79

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Solution

The fourth proportional to 2,285.13, 3,153.51 and 1,276.79 is: 1,761.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.13 : 3,153.51 = 1,276.79 : x
  2. Step 2: Convert to fraction form
    2,285.13/3,153.51 = 1,276.79/x
  3. Step 3: Cross multiply
    2,285.13x = 3,153.51 × 1,276.79
  4. Step 4: Simplify right side
    2,285.13x = 4,026,377.92
  5. Step 5: Solve for x
    x = 4,026,377.92/2,285.13
  6. Step 6: Final answer
    x = 1,761.99

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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.