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Finding the Fourth Proportional to 1,373.85, 1,894.73 and 925.79

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Solution

The fourth proportional to 1,373.85, 1,894.73 and 925.79 is: 1,276.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,373.85 : 1,894.73 = 925.79 : x
  2. Step 2: Convert to fraction form
    1,373.85/1,894.73 = 925.79/x
  3. Step 3: Cross multiply
    1,373.85x = 1,894.73 × 925.79
  4. Step 4: Simplify right side
    1,373.85x = 1,754,107.98
  5. Step 5: Solve for x
    x = 1,754,107.98/1,373.85
  6. Step 6: Final answer
    x = 1,276.78

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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.