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Finding the Fourth Proportional to 1,972.56, 2,958.84 and 1,587

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Solution

The fourth proportional to 1,972.56, 2,958.84 and 1,587 is: 2,380.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.56 : 2,958.84 = 1,587 : x
  2. Step 2: Convert to fraction form
    1,972.56/2,958.84 = 1,587/x
  3. Step 3: Cross multiply
    1,972.56x = 2,958.84 × 1,587
  4. Step 4: Simplify right side
    1,972.56x = 4,695,679.08
  5. Step 5: Solve for x
    x = 4,695,679.08/1,972.56
  6. Step 6: Final answer
    x = 2,380.50

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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.