Home / 7,972.64-11,002.67-4,387.78

Finding the Fourth Proportional to 7,972.64, 11,002.67 and 4,387.78

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Solution

The fourth proportional to 7,972.64, 11,002.67 and 4,387.78 is: 6,055.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.64 : 11,002.67 = 4,387.78 : x
  2. Step 2: Convert to fraction form
    7,972.64/11,002.67 = 4,387.78/x
  3. Step 3: Cross multiply
    7,972.64x = 11,002.67 × 4,387.78
  4. Step 4: Simplify right side
    7,972.64x = 48,277,295.37
  5. Step 5: Solve for x
    x = 48,277,295.37/7,972.64
  6. Step 6: Final answer
    x = 6,055.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.