Home / 5,530.40-8,278.32-4,223.20

Finding the Fourth Proportional to 5,530.40, 8,278.32 and 4,223.20

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Solution

The fourth proportional to 5,530.40, 8,278.32 and 4,223.20 is: 6,321.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,530.40 : 8,278.32 = 4,223.20 : x
  2. Step 2: Convert to fraction form
    5,530.40/8,278.32 = 4,223.20/x
  3. Step 3: Cross multiply
    5,530.40x = 8,278.32 × 4,223.20
  4. Step 4: Simplify right side
    5,530.40x = 34,961,001.02
  5. Step 5: Solve for x
    x = 34,961,001.02/5,530.40
  6. Step 6: Final answer
    x = 6,321.60

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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.