Home / 5,174.28-7,140.49-2,816.51

Finding the Fourth Proportional to 5,174.28, 7,140.49 and 2,816.51

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Solution

The fourth proportional to 5,174.28, 7,140.49 and 2,816.51 is: 3,886.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.28 : 7,140.49 = 2,816.51 : x
  2. Step 2: Convert to fraction form
    5,174.28/7,140.49 = 2,816.51/x
  3. Step 3: Cross multiply
    5,174.28x = 7,140.49 × 2,816.51
  4. Step 4: Simplify right side
    5,174.28x = 20,111,218.75
  5. Step 5: Solve for x
    x = 20,111,218.75/5,174.28
  6. Step 6: Final answer
    x = 3,886.77

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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.