Home / 5,386.80-8,079.12-1,923.78

Finding the Fourth Proportional to 5,386.80, 8,079.12 and 1,923.78

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Solution

The fourth proportional to 5,386.80, 8,079.12 and 1,923.78 is: 2,885.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,386.80 : 8,079.12 = 1,923.78 : x
  2. Step 2: Convert to fraction form
    5,386.80/8,079.12 = 1,923.78/x
  3. Step 3: Cross multiply
    5,386.80x = 8,079.12 × 1,923.78
  4. Step 4: Simplify right side
    5,386.80x = 15,542,449.47
  5. Step 5: Solve for x
    x = 15,542,449.47/5,386.80
  6. Step 6: Final answer
    x = 2,885.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.