Home / 3,013.80-4,157.10-2,175.78

Finding the Fourth Proportional to 3,013.80, 4,157.10 and 2,175.78

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Solution

The fourth proportional to 3,013.80, 4,157.10 and 2,175.78 is: 3,001.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,013.80 : 4,157.10 = 2,175.78 : x
  2. Step 2: Convert to fraction form
    3,013.80/4,157.10 = 2,175.78/x
  3. Step 3: Cross multiply
    3,013.80x = 4,157.10 × 2,175.78
  4. Step 4: Simplify right side
    3,013.80x = 9,044,935.04
  5. Step 5: Solve for x
    x = 9,044,935.04/3,013.80
  6. Step 6: Final answer
    x = 3,001.17

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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.