Home / 5,639.12-8,442.48-4,245.92

Finding the Fourth Proportional to 5,639.12, 8,442.48 and 4,245.92

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Solution

The fourth proportional to 5,639.12, 8,442.48 and 4,245.92 is: 6,356.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.12 : 8,442.48 = 4,245.92 : x
  2. Step 2: Convert to fraction form
    5,639.12/8,442.48 = 4,245.92/x
  3. Step 3: Cross multiply
    5,639.12x = 8,442.48 × 4,245.92
  4. Step 4: Simplify right side
    5,639.12x = 35,846,094.68
  5. Step 5: Solve for x
    x = 35,846,094.68/5,639.12
  6. Step 6: Final answer
    x = 6,356.68

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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.