Home / 5,174.49-7,140.48-2,816.61

Finding the Fourth Proportional to 5,174.49, 7,140.48 and 2,816.61

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Solution

The fourth proportional to 5,174.49, 7,140.48 and 2,816.61 is: 3,886.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.49 : 7,140.48 = 2,816.61 : x
  2. Step 2: Convert to fraction form
    5,174.49/7,140.48 = 2,816.61/x
  3. Step 3: Cross multiply
    5,174.49x = 7,140.48 × 2,816.61
  4. Step 4: Simplify right side
    5,174.49x = 20,111,947.37
  5. Step 5: Solve for x
    x = 20,111,947.37/5,174.49
  6. Step 6: Final answer
    x = 3,886.75

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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.