Home / 2,278.03-3,143.70-1,333.61

Finding the Fourth Proportional to 2,278.03, 3,143.70 and 1,333.61

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Solution

The fourth proportional to 2,278.03, 3,143.70 and 1,333.61 is: 1,840.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.03 : 3,143.70 = 1,333.61 : x
  2. Step 2: Convert to fraction form
    2,278.03/3,143.70 = 1,333.61/x
  3. Step 3: Cross multiply
    2,278.03x = 3,143.70 × 1,333.61
  4. Step 4: Simplify right side
    2,278.03x = 4,192,469.76
  5. Step 5: Solve for x
    x = 4,192,469.76/2,278.03
  6. Step 6: Final answer
    x = 1,840.40

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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.