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Finding the Fourth Proportional to 1,348.06, 1,860.49 and 758.71

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Solution

The fourth proportional to 1,348.06, 1,860.49 and 758.71 is: 1,047.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348.06 : 1,860.49 = 758.71 : x
  2. Step 2: Convert to fraction form
    1,348.06/1,860.49 = 758.71/x
  3. Step 3: Cross multiply
    1,348.06x = 1,860.49 × 758.71
  4. Step 4: Simplify right side
    1,348.06x = 1,411,563.07
  5. Step 5: Solve for x
    x = 1,411,563.07/1,348.06
  6. Step 6: Final answer
    x = 1,047.11

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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.