Home / 5,356.72-7,391.02-3,117.40

Finding the Fourth Proportional to 5,356.72, 7,391.02 and 3,117.40

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Solution

The fourth proportional to 5,356.72, 7,391.02 and 3,117.40 is: 4,301.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,356.72 : 7,391.02 = 3,117.40 : x
  2. Step 2: Convert to fraction form
    5,356.72/7,391.02 = 3,117.40/x
  3. Step 3: Cross multiply
    5,356.72x = 7,391.02 × 3,117.40
  4. Step 4: Simplify right side
    5,356.72x = 23,040,765.75
  5. Step 5: Solve for x
    x = 23,040,765.75/5,356.72
  6. Step 6: Final answer
    x = 4,301.28

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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.