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Finding the Fourth Proportional to 1,322.91, 1,825.13 and 1,020.17

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Solution

The fourth proportional to 1,322.91, 1,825.13 and 1,020.17 is: 1,407.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322.91 : 1,825.13 = 1,020.17 : x
  2. Step 2: Convert to fraction form
    1,322.91/1,825.13 = 1,020.17/x
  3. Step 3: Cross multiply
    1,322.91x = 1,825.13 × 1,020.17
  4. Step 4: Simplify right side
    1,322.91x = 1,861,928.65
  5. Step 5: Solve for x
    x = 1,861,928.65/1,322.91
  6. Step 6: Final answer
    x = 1,407.45

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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.