Home / 5,174.16-7,140.48-2,816.40

Finding the Fourth Proportional to 5,174.16, 7,140.48 and 2,816.40

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Solution

The fourth proportional to 5,174.16, 7,140.48 and 2,816.40 is: 3,886.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.16 : 7,140.48 = 2,816.40 : x
  2. Step 2: Convert to fraction form
    5,174.16/7,140.48 = 2,816.40/x
  3. Step 3: Cross multiply
    5,174.16x = 7,140.48 × 2,816.40
  4. Step 4: Simplify right side
    5,174.16x = 20,110,447.87
  5. Step 5: Solve for x
    x = 20,110,447.87/5,174.16
  6. Step 6: Final answer
    x = 3,886.71

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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.