Home / 7,972.32-11,967.72-4,281.78

Finding the Fourth Proportional to 7,972.32, 11,967.72 and 4,281.78

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Solution

The fourth proportional to 7,972.32, 11,967.72 and 4,281.78 is: 6,427.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.32 : 11,967.72 = 4,281.78 : x
  2. Step 2: Convert to fraction form
    7,972.32/11,967.72 = 4,281.78/x
  3. Step 3: Cross multiply
    7,972.32x = 11,967.72 × 4,281.78
  4. Step 4: Simplify right side
    7,972.32x = 51,243,144.14
  5. Step 5: Solve for x
    x = 51,243,144.14/7,972.32
  6. Step 6: Final answer
    x = 6,427.63

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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.