Home / 5,156.75-7,735.10-1,261.13

Finding the Fourth Proportional to 5,156.75, 7,735.10 and 1,261.13

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Solution

The fourth proportional to 5,156.75, 7,735.10 and 1,261.13 is: 1,891.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.75 : 7,735.10 = 1,261.13 : x
  2. Step 2: Convert to fraction form
    5,156.75/7,735.10 = 1,261.13/x
  3. Step 3: Cross multiply
    5,156.75x = 7,735.10 × 1,261.13
  4. Step 4: Simplify right side
    5,156.75x = 9,754,921.68
  5. Step 5: Solve for x
    x = 9,754,921.68/5,156.75
  6. Step 6: Final answer
    x = 1,891.68

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1.5x scale

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.