Home / 5,547.40-8,321.10-5,278.60

Finding the Fourth Proportional to 5,547.40, 8,321.10 and 5,278.60

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Solution

The fourth proportional to 5,547.40, 8,321.10 and 5,278.60 is: 7,917.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,547.40 : 8,321.10 = 5,278.60 : x
  2. Step 2: Convert to fraction form
    5,547.40/8,321.10 = 5,278.60/x
  3. Step 3: Cross multiply
    5,547.40x = 8,321.10 × 5,278.60
  4. Step 4: Simplify right side
    5,547.40x = 43,923,758.46
  5. Step 5: Solve for x
    x = 43,923,758.46/5,547.40
  6. Step 6: Final answer
    x = 7,917.90

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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.