Home / 8,812.34-12,151.06-5,621.36

Finding the Fourth Proportional to 8,812.34, 12,151.06 and 5,621.36

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Solution

The fourth proportional to 8,812.34, 12,151.06 and 5,621.36 is: 7,751.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.34 : 12,151.06 = 5,621.36 : x
  2. Step 2: Convert to fraction form
    8,812.34/12,151.06 = 5,621.36/x
  3. Step 3: Cross multiply
    8,812.34x = 12,151.06 × 5,621.36
  4. Step 4: Simplify right side
    8,812.34x = 68,305,498.97
  5. Step 5: Solve for x
    x = 68,305,498.97/8,812.34
  6. Step 6: Final answer
    x = 7,751.12

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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.