Home / 6,112.20-8,439.48-5,374.92

Finding the Fourth Proportional to 6,112.20, 8,439.48 and 5,374.92

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Solution

The fourth proportional to 6,112.20, 8,439.48 and 5,374.92 is: 7,421.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,112.20 : 8,439.48 = 5,374.92 : x
  2. Step 2: Convert to fraction form
    6,112.20/8,439.48 = 5,374.92/x
  3. Step 3: Cross multiply
    6,112.20x = 8,439.48 × 5,374.92
  4. Step 4: Simplify right side
    6,112.20x = 45,361,529.84
  5. Step 5: Solve for x
    x = 45,361,529.84/6,112.20
  6. Step 6: Final answer
    x = 7,421.47

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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.