Home / 5,164.80-7,127.40-2,806.92

Finding the Fourth Proportional to 5,164.80, 7,127.40 and 2,806.92

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Solution

The fourth proportional to 5,164.80, 7,127.40 and 2,806.92 is: 3,873.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,164.80 : 7,127.40 = 2,806.92 : x
  2. Step 2: Convert to fraction form
    5,164.80/7,127.40 = 2,806.92/x
  3. Step 3: Cross multiply
    5,164.80x = 7,127.40 × 2,806.92
  4. Step 4: Simplify right side
    5,164.80x = 20,006,041.61
  5. Step 5: Solve for x
    x = 20,006,041.61/5,164.80
  6. Step 6: Final answer
    x = 3,873.54

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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.