Home / 2,229.91-3,077.65-1,285.53

Finding the Fourth Proportional to 2,229.91, 3,077.65 and 1,285.53

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Solution

The fourth proportional to 2,229.91, 3,077.65 and 1,285.53 is: 1,774.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,229.91 : 3,077.65 = 1,285.53 : x
  2. Step 2: Convert to fraction form
    2,229.91/3,077.65 = 1,285.53/x
  3. Step 3: Cross multiply
    2,229.91x = 3,077.65 × 1,285.53
  4. Step 4: Simplify right side
    2,229.91x = 3,956,411.40
  5. Step 5: Solve for x
    x = 3,956,411.40/2,229.91
  6. Step 6: Final answer
    x = 1,774.25

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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.