Home / 9,192.68-12,686.39-5,215.07

Finding the Fourth Proportional to 9,192.68, 12,686.39 and 5,215.07

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Solution

The fourth proportional to 9,192.68, 12,686.39 and 5,215.07 is: 7,197.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,192.68 : 12,686.39 = 5,215.07 : x
  2. Step 2: Convert to fraction form
    9,192.68/12,686.39 = 5,215.07/x
  3. Step 3: Cross multiply
    9,192.68x = 12,686.39 × 5,215.07
  4. Step 4: Simplify right side
    9,192.68x = 66,160,456.65
  5. Step 5: Solve for x
    x = 66,160,456.65/9,192.68
  6. Step 6: Final answer
    x = 7,197.08

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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.