Home / 5,387.12-8,069.40-4,341.20

Finding the Fourth Proportional to 5,387.12, 8,069.40 and 4,341.20

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Solution

The fourth proportional to 5,387.12, 8,069.40 and 4,341.20 is: 6,502.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387.12 : 8,069.40 = 4,341.20 : x
  2. Step 2: Convert to fraction form
    5,387.12/8,069.40 = 4,341.20/x
  3. Step 3: Cross multiply
    5,387.12x = 8,069.40 × 4,341.20
  4. Step 4: Simplify right side
    5,387.12x = 35,030,879.28
  5. Step 5: Solve for x
    x = 35,030,879.28/5,387.12
  6. Step 6: Final answer
    x = 6,502.71

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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.