Home / 2,789.61-4,184.85-914.91

Finding the Fourth Proportional to 2,789.61, 4,184.85 and 914.91

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Solution

The fourth proportional to 2,789.61, 4,184.85 and 914.91 is: 1,372.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.61 : 4,184.85 = 914.91 : x
  2. Step 2: Convert to fraction form
    2,789.61/4,184.85 = 914.91/x
  3. Step 3: Cross multiply
    2,789.61x = 4,184.85 × 914.91
  4. Step 4: Simplify right side
    2,789.61x = 3,828,761.11
  5. Step 5: Solve for x
    x = 3,828,761.11/2,789.61
  6. Step 6: Final answer
    x = 1,372.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.