Home / 3,521.22-4,859.13-2,123.70

Finding the Fourth Proportional to 3,521.22, 4,859.13 and 2,123.70

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Solution

The fourth proportional to 3,521.22, 4,859.13 and 2,123.70 is: 2,930.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521.22 : 4,859.13 = 2,123.70 : x
  2. Step 2: Convert to fraction form
    3,521.22/4,859.13 = 2,123.70/x
  3. Step 3: Cross multiply
    3,521.22x = 4,859.13 × 2,123.70
  4. Step 4: Simplify right side
    3,521.22x = 10,319,334.38
  5. Step 5: Solve for x
    x = 10,319,334.38/3,521.22
  6. Step 6: Final answer
    x = 2,930.61

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Half scale
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Double scale
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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.