Home / 5,045.31-6,961.77-2,891.55

Finding the Fourth Proportional to 5,045.31, 6,961.77 and 2,891.55

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Solution

The fourth proportional to 5,045.31, 6,961.77 and 2,891.55 is: 3,989.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,045.31 : 6,961.77 = 2,891.55 : x
  2. Step 2: Convert to fraction form
    5,045.31/6,961.77 = 2,891.55/x
  3. Step 3: Cross multiply
    5,045.31x = 6,961.77 × 2,891.55
  4. Step 4: Simplify right side
    5,045.31x = 20,130,301.12
  5. Step 5: Solve for x
    x = 20,130,301.12/5,045.31
  6. Step 6: Final answer
    x = 3,989.90

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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.