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Finding the Fourth Proportional to 1,628.65, 2,437.63 and 887.13

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Solution

The fourth proportional to 1,628.65, 2,437.63 and 887.13 is: 1,327.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.65 : 2,437.63 = 887.13 : x
  2. Step 2: Convert to fraction form
    1,628.65/2,437.63 = 887.13/x
  3. Step 3: Cross multiply
    1,628.65x = 2,437.63 × 887.13
  4. Step 4: Simplify right side
    1,628.65x = 2,162,494.70
  5. Step 5: Solve for x
    x = 2,162,494.70/1,628.65
  6. Step 6: Final answer
    x = 1,327.78

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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.