Home / 2,821.16-4,228.94-1,337.78

Finding the Fourth Proportional to 2,821.16, 4,228.94 and 1,337.78

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Solution

The fourth proportional to 2,821.16, 4,228.94 and 1,337.78 is: 2,005.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.16 : 4,228.94 = 1,337.78 : x
  2. Step 2: Convert to fraction form
    2,821.16/4,228.94 = 1,337.78/x
  3. Step 3: Cross multiply
    2,821.16x = 4,228.94 × 1,337.78
  4. Step 4: Simplify right side
    2,821.16x = 5,657,373.55
  5. Step 5: Solve for x
    x = 5,657,373.55/2,821.16
  6. Step 6: Final answer
    x = 2,005.34

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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.