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Finding the Fourth Proportional to 1,348.39, 1,860.75 and 758.92

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Solution

The fourth proportional to 1,348.39, 1,860.75 and 758.92 is: 1,047.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348.39 : 1,860.75 = 758.92 : x
  2. Step 2: Convert to fraction form
    1,348.39/1,860.75 = 758.92/x
  3. Step 3: Cross multiply
    1,348.39x = 1,860.75 × 758.92
  4. Step 4: Simplify right side
    1,348.39x = 1,412,155.74
  5. Step 5: Solve for x
    x = 1,412,155.74/1,348.39
  6. Step 6: Final answer
    x = 1,047.29

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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.