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Finding the Fourth Proportional to 2,951.55, 4,429.95 and 1,392.42

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Solution

The fourth proportional to 2,951.55, 4,429.95 and 1,392.42 is: 2,089.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,951.55 : 4,429.95 = 1,392.42 : x
  2. Step 2: Convert to fraction form
    2,951.55/4,429.95 = 1,392.42/x
  3. Step 3: Cross multiply
    2,951.55x = 4,429.95 × 1,392.42
  4. Step 4: Simplify right side
    2,951.55x = 6,168,350.98
  5. Step 5: Solve for x
    x = 6,168,350.98/2,951.55
  6. Step 6: Final answer
    x = 2,089.87

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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.