Home / 4,689.72-6,470.82-2,800.80

Finding the Fourth Proportional to 4,689.72, 6,470.82 and 2,800.80

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Solution

The fourth proportional to 4,689.72, 6,470.82 and 2,800.80 is: 3,864.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,689.72 : 6,470.82 = 2,800.80 : x
  2. Step 2: Convert to fraction form
    4,689.72/6,470.82 = 2,800.80/x
  3. Step 3: Cross multiply
    4,689.72x = 6,470.82 × 2,800.80
  4. Step 4: Simplify right side
    4,689.72x = 18,123,472.66
  5. Step 5: Solve for x
    x = 18,123,472.66/4,689.72
  6. Step 6: Final answer
    x = 3,864.51

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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.