Home / 2,245.95-3,369.39-947.42

Finding the Fourth Proportional to 2,245.95, 3,369.39 and 947.42

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Solution

The fourth proportional to 2,245.95, 3,369.39 and 947.42 is: 1,421.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,245.95 : 3,369.39 = 947.42 : x
  2. Step 2: Convert to fraction form
    2,245.95/3,369.39 = 947.42/x
  3. Step 3: Cross multiply
    2,245.95x = 3,369.39 × 947.42
  4. Step 4: Simplify right side
    2,245.95x = 3,192,227.47
  5. Step 5: Solve for x
    x = 3,192,227.47/2,245.95
  6. Step 6: Final answer
    x = 1,421.33

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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.