Home / 8,127.30-11,211.57-5,138.13

Finding the Fourth Proportional to 8,127.30, 11,211.57 and 5,138.13

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Solution

The fourth proportional to 8,127.30, 11,211.57 and 5,138.13 is: 7,088.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,127.30 : 11,211.57 = 5,138.13 : x
  2. Step 2: Convert to fraction form
    8,127.30/11,211.57 = 5,138.13/x
  3. Step 3: Cross multiply
    8,127.30x = 11,211.57 × 5,138.13
  4. Step 4: Simplify right side
    8,127.30x = 57,606,504.16
  5. Step 5: Solve for x
    x = 57,606,504.16/8,127.30
  6. Step 6: Final answer
    x = 7,088.02

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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.