Home / 5,403.40-8,103.12-1,939.84

Finding the Fourth Proportional to 5,403.40, 8,103.12 and 1,939.84

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Solution

The fourth proportional to 5,403.40, 8,103.12 and 1,939.84 is: 2,909.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,403.40 : 8,103.12 = 1,939.84 : x
  2. Step 2: Convert to fraction form
    5,403.40/8,103.12 = 1,939.84/x
  3. Step 3: Cross multiply
    5,403.40x = 8,103.12 × 1,939.84
  4. Step 4: Simplify right side
    5,403.40x = 15,718,756.30
  5. Step 5: Solve for x
    x = 15,718,756.30/5,403.40
  6. Step 6: Final answer
    x = 2,909.05

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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.