Home / 4,013.40-5,538.30-2,220.78

Finding the Fourth Proportional to 4,013.40, 5,538.30 and 2,220.78

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Solution

The fourth proportional to 4,013.40, 5,538.30 and 2,220.78 is: 3,064.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,013.40 : 5,538.30 = 2,220.78 : x
  2. Step 2: Convert to fraction form
    4,013.40/5,538.30 = 2,220.78/x
  3. Step 3: Cross multiply
    4,013.40x = 5,538.30 × 2,220.78
  4. Step 4: Simplify right side
    4,013.40x = 12,299,345.87
  5. Step 5: Solve for x
    x = 12,299,345.87/4,013.40
  6. Step 6: Final answer
    x = 3,064.57

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Half 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.