Home / 6,115.20-8,440.32-4,019.52

Finding the Fourth Proportional to 6,115.20, 8,440.32 and 4,019.52

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Solution

The fourth proportional to 6,115.20, 8,440.32 and 4,019.52 is: 5,547.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,115.20 : 8,440.32 = 4,019.52 : x
  2. Step 2: Convert to fraction form
    6,115.20/8,440.32 = 4,019.52/x
  3. Step 3: Cross multiply
    6,115.20x = 8,440.32 × 4,019.52
  4. Step 4: Simplify right side
    6,115.20x = 33,926,035.05
  5. Step 5: Solve for x
    x = 33,926,035.05/6,115.20
  6. Step 6: Final answer
    x = 5,547.82

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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.