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Finding the Fourth Proportional to 5,360.97, 8,053.81 and 5,139.54

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Solution

The fourth proportional to 5,360.97, 8,053.81 and 5,139.54 is: 7,721.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,360.97 : 8,053.81 = 5,139.54 : x
  2. Step 2: Convert to fraction form
    5,360.97/8,053.81 = 5,139.54/x
  3. Step 3: Cross multiply
    5,360.97x = 8,053.81 × 5,139.54
  4. Step 4: Simplify right side
    5,360.97x = 41,392,878.65
  5. Step 5: Solve for x
    x = 41,392,878.65/5,360.97
  6. Step 6: Final answer
    x = 7,721.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.