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Finding the Fourth Proportional to 1,972.37, 2,958.15 and 931.93

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Solution

The fourth proportional to 1,972.37, 2,958.15 and 931.93 is: 1,397.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.37 : 2,958.15 = 931.93 : x
  2. Step 2: Convert to fraction form
    1,972.37/2,958.15 = 931.93/x
  3. Step 3: Cross multiply
    1,972.37x = 2,958.15 × 931.93
  4. Step 4: Simplify right side
    1,972.37x = 2,756,788.73
  5. Step 5: Solve for x
    x = 2,756,788.73/1,972.37
  6. Step 6: Final answer
    x = 1,397.70

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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.