Home / 7,921.40-11,867.70-6,452.60

Finding the Fourth Proportional to 7,921.40, 11,867.70 and 6,452.60

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Solution

The fourth proportional to 7,921.40, 11,867.70 and 6,452.60 is: 9,667.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.40 : 11,867.70 = 6,452.60 : x
  2. Step 2: Convert to fraction form
    7,921.40/11,867.70 = 6,452.60/x
  3. Step 3: Cross multiply
    7,921.40x = 11,867.70 × 6,452.60
  4. Step 4: Simplify right side
    7,921.40x = 76,577,521.02
  5. Step 5: Solve for x
    x = 76,577,521.02/7,921.40
  6. Step 6: Final answer
    x = 9,667.17

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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.