Home / 5,121-7,066.56-2,882.16

Finding the Fourth Proportional to 5,121, 7,066.56 and 2,882.16

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Solution

The fourth proportional to 5,121, 7,066.56 and 2,882.16 is: 3,977.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121 : 7,066.56 = 2,882.16 : x
  2. Step 2: Convert to fraction form
    5,121/7,066.56 = 2,882.16/x
  3. Step 3: Cross multiply
    5,121x = 7,066.56 × 2,882.16
  4. Step 4: Simplify right side
    5,121x = 20,366,956.57
  5. Step 5: Solve for x
    x = 20,366,956.57/5,121
  6. Step 6: Final answer
    x = 3,977.14

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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.