Home / 3,153.35-4,350.20-2,143.82

Finding the Fourth Proportional to 3,153.35, 4,350.20 and 2,143.82

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Solution

The fourth proportional to 3,153.35, 4,350.20 and 2,143.82 is: 2,957.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,153.35 : 4,350.20 = 2,143.82 : x
  2. Step 2: Convert to fraction form
    3,153.35/4,350.20 = 2,143.82/x
  3. Step 3: Cross multiply
    3,153.35x = 4,350.20 × 2,143.82
  4. Step 4: Simplify right side
    3,153.35x = 9,326,045.76
  5. Step 5: Solve for x
    x = 9,326,045.76/3,153.35
  6. Step 6: Final answer
    x = 2,957.50

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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.