Home / 5,120.92-7,681.06-2,521.56

Finding the Fourth Proportional to 5,120.92, 7,681.06 and 2,521.56

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Solution

The fourth proportional to 5,120.92, 7,681.06 and 2,521.56 is: 3,782.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.92 : 7,681.06 = 2,521.56 : x
  2. Step 2: Convert to fraction form
    5,120.92/7,681.06 = 2,521.56/x
  3. Step 3: Cross multiply
    5,120.92x = 7,681.06 × 2,521.56
  4. Step 4: Simplify right side
    5,120.92x = 19,368,253.65
  5. Step 5: Solve for x
    x = 19,368,253.65/5,120.92
  6. Step 6: Final answer
    x = 3,782.18

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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.