Home / 5,153.12-7,729.56-1,257.56

Finding the Fourth Proportional to 5,153.12, 7,729.56 and 1,257.56

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Solution

The fourth proportional to 5,153.12, 7,729.56 and 1,257.56 is: 1,886.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,153.12 : 7,729.56 = 1,257.56 : x
  2. Step 2: Convert to fraction form
    5,153.12/7,729.56 = 1,257.56/x
  3. Step 3: Cross multiply
    5,153.12x = 7,729.56 × 1,257.56
  4. Step 4: Simplify right side
    5,153.12x = 9,720,385.47
  5. Step 5: Solve for x
    x = 9,720,385.47/5,153.12
  6. Step 6: Final answer
    x = 1,886.31

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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.