Home / 5,486.17-7,570.78-3,128.17

Finding the Fourth Proportional to 5,486.17, 7,570.78 and 3,128.17

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Solution

The fourth proportional to 5,486.17, 7,570.78 and 3,128.17 is: 4,316.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,486.17 : 7,570.78 = 3,128.17 : x
  2. Step 2: Convert to fraction form
    5,486.17/7,570.78 = 3,128.17/x
  3. Step 3: Cross multiply
    5,486.17x = 7,570.78 × 3,128.17
  4. Step 4: Simplify right side
    5,486.17x = 23,682,660.13
  5. Step 5: Solve for x
    x = 23,682,660.13/5,486.17
  6. Step 6: Final answer
    x = 4,316.79

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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.