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Finding the Fourth Proportional to 1,394.47, 1,924.62 and 952.21

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Solution

The fourth proportional to 1,394.47, 1,924.62 and 952.21 is: 1,314.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394.47 : 1,924.62 = 952.21 : x
  2. Step 2: Convert to fraction form
    1,394.47/1,924.62 = 952.21/x
  3. Step 3: Cross multiply
    1,394.47x = 1,924.62 × 952.21
  4. Step 4: Simplify right side
    1,394.47x = 1,832,642.41
  5. Step 5: Solve for x
    x = 1,832,642.41/1,394.47
  6. Step 6: Final answer
    x = 1,314.22

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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.