Home / 7,981.78-11,013.25-4,444.31

Finding the Fourth Proportional to 7,981.78, 11,013.25 and 4,444.31

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Solution

The fourth proportional to 7,981.78, 11,013.25 and 4,444.31 is: 6,132.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.78 : 11,013.25 = 4,444.31 : x
  2. Step 2: Convert to fraction form
    7,981.78/11,013.25 = 4,444.31/x
  3. Step 3: Cross multiply
    7,981.78x = 11,013.25 × 4,444.31
  4. Step 4: Simplify right side
    7,981.78x = 48,946,297.11
  5. Step 5: Solve for x
    x = 48,946,297.11/7,981.78
  6. Step 6: Final answer
    x = 6,132.25

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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.