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Finding the Fourth Proportional to 1,736.10, 2,601.96 and 870.66

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Solution

The fourth proportional to 1,736.10, 2,601.96 and 870.66 is: 1,304.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,736.10 : 2,601.96 = 870.66 : x
  2. Step 2: Convert to fraction form
    1,736.10/2,601.96 = 870.66/x
  3. Step 3: Cross multiply
    1,736.10x = 2,601.96 × 870.66
  4. Step 4: Simplify right side
    1,736.10x = 2,265,422.49
  5. Step 5: Solve for x
    x = 2,265,422.49/1,736.10
  6. Step 6: Final answer
    x = 1,304.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.