Home / 2,810.89-4,218.92-1,425.19

Finding the Fourth Proportional to 2,810.89, 4,218.92 and 1,425.19

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Solution

The fourth proportional to 2,810.89, 4,218.92 and 1,425.19 is: 2,139.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810.89 : 4,218.92 = 1,425.19 : x
  2. Step 2: Convert to fraction form
    2,810.89/4,218.92 = 1,425.19/x
  3. Step 3: Cross multiply
    2,810.89x = 4,218.92 × 1,425.19
  4. Step 4: Simplify right side
    2,810.89x = 6,012,752.05
  5. Step 5: Solve for x
    x = 6,012,752.05/2,810.89
  6. Step 6: Final answer
    x = 2,139.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.