Home / 2,077.16-3,115.40-615.98

Finding the Fourth Proportional to 2,077.16, 3,115.40 and 615.98

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Solution

The fourth proportional to 2,077.16, 3,115.40 and 615.98 is: 923.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,077.16 : 3,115.40 = 615.98 : x
  2. Step 2: Convert to fraction form
    2,077.16/3,115.40 = 615.98/x
  3. Step 3: Cross multiply
    2,077.16x = 3,115.40 × 615.98
  4. Step 4: Simplify right side
    2,077.16x = 1,919,024.09
  5. Step 5: Solve for x
    x = 1,919,024.09/2,077.16
  6. Step 6: Final answer
    x = 923.87

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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.