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Finding the Fourth Proportional to 2,972.64, 4,458.97 and 892.67

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Solution

The fourth proportional to 2,972.64, 4,458.97 and 892.67 is: 1,339.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.64 : 4,458.97 = 892.67 : x
  2. Step 2: Convert to fraction form
    2,972.64/4,458.97 = 892.67/x
  3. Step 3: Cross multiply
    2,972.64x = 4,458.97 × 892.67
  4. Step 4: Simplify right side
    2,972.64x = 3,980,362.55
  5. Step 5: Solve for x
    x = 3,980,362.55/2,972.64
  6. Step 6: Final answer
    x = 1,339.00

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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.