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Finding the Fourth Proportional to 1,522.67, 2,101.14 and 859.39

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Solution

The fourth proportional to 1,522.67, 2,101.14 and 859.39 is: 1,185.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,522.67 : 2,101.14 = 859.39 : x
  2. Step 2: Convert to fraction form
    1,522.67/2,101.14 = 859.39/x
  3. Step 3: Cross multiply
    1,522.67x = 2,101.14 × 859.39
  4. Step 4: Simplify right side
    1,522.67x = 1,805,693.45
  5. Step 5: Solve for x
    x = 1,805,693.45/1,522.67
  6. Step 6: Final answer
    x = 1,185.88

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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.