Home / 3,012.80-4,488.28-2,877.90

Finding the Fourth Proportional to 3,012.80, 4,488.28 and 2,877.90

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Solution

The fourth proportional to 3,012.80, 4,488.28 and 2,877.90 is: 4,287.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,012.80 : 4,488.28 = 2,877.90 : x
  2. Step 2: Convert to fraction form
    3,012.80/4,488.28 = 2,877.90/x
  3. Step 3: Cross multiply
    3,012.80x = 4,488.28 × 2,877.90
  4. Step 4: Simplify right side
    3,012.80x = 12,916,821.01
  5. Step 5: Solve for x
    x = 12,916,821.01/3,012.80
  6. Step 6: Final answer
    x = 4,287.31

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.