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Finding the Fourth Proportional to 1,351.56, 1,873.74 and 1,281.30

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Solution

The fourth proportional to 1,351.56, 1,873.74 and 1,281.30 is: 1,776.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351.56 : 1,873.74 = 1,281.30 : x
  2. Step 2: Convert to fraction form
    1,351.56/1,873.74 = 1,281.30/x
  3. Step 3: Cross multiply
    1,351.56x = 1,873.74 × 1,281.30
  4. Step 4: Simplify right side
    1,351.56x = 2,400,823.06
  5. Step 5: Solve for x
    x = 2,400,823.06/1,351.56
  6. Step 6: Final answer
    x = 1,776.33

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.