Home / 5,112.07-7,664.52-1,989.44

Finding the Fourth Proportional to 5,112.07, 7,664.52 and 1,989.44

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Solution

The fourth proportional to 5,112.07, 7,664.52 and 1,989.44 is: 2,982.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.07 : 7,664.52 = 1,989.44 : x
  2. Step 2: Convert to fraction form
    5,112.07/7,664.52 = 1,989.44/x
  3. Step 3: Cross multiply
    5,112.07x = 7,664.52 × 1,989.44
  4. Step 4: Simplify right side
    5,112.07x = 15,248,132.47
  5. Step 5: Solve for x
    x = 15,248,132.47/5,112.07
  6. Step 6: Final answer
    x = 2,982.77

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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.