Home / 2,982.88-4,143.36-2,935.20

Finding the Fourth Proportional to 2,982.88, 4,143.36 and 2,935.20

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Solution

The fourth proportional to 2,982.88, 4,143.36 and 2,935.20 is: 4,077.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,982.88 : 4,143.36 = 2,935.20 : x
  2. Step 2: Convert to fraction form
    2,982.88/4,143.36 = 2,935.20/x
  3. Step 3: Cross multiply
    2,982.88x = 4,143.36 × 2,935.20
  4. Step 4: Simplify right side
    2,982.88x = 12,161,590.70
  5. Step 5: Solve for x
    x = 12,161,590.70/2,982.88
  6. Step 6: Final answer
    x = 4,077.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.