Home / 2,750.90-4,111.86-2,685.28

Finding the Fourth Proportional to 2,750.90, 4,111.86 and 2,685.28

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Solution

The fourth proportional to 2,750.90, 4,111.86 and 2,685.28 is: 4,013.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,750.90 : 4,111.86 = 2,685.28 : x
  2. Step 2: Convert to fraction form
    2,750.90/4,111.86 = 2,685.28/x
  3. Step 3: Cross multiply
    2,750.90x = 4,111.86 × 2,685.28
  4. Step 4: Simplify right side
    2,750.90x = 11,041,495.42
  5. Step 5: Solve for x
    x = 11,041,495.42/2,750.90
  6. Step 6: Final answer
    x = 4,013.78

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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.