Home / 8,931.36-12,324.20-5,154.49

Finding the Fourth Proportional to 8,931.36, 12,324.20 and 5,154.49

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Solution

The fourth proportional to 8,931.36, 12,324.20 and 5,154.49 is: 7,112.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.36 : 12,324.20 = 5,154.49 : x
  2. Step 2: Convert to fraction form
    8,931.36/12,324.20 = 5,154.49/x
  3. Step 3: Cross multiply
    8,931.36x = 12,324.20 × 5,154.49
  4. Step 4: Simplify right side
    8,931.36x = 63,524,914.96
  5. Step 5: Solve for x
    x = 63,524,914.96/8,931.36
  6. Step 6: Final answer
    x = 7,112.57

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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.