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Finding the Fourth Proportional to 2,245.96, 3,368.95 and 785.11

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Solution

The fourth proportional to 2,245.96, 3,368.95 and 785.11 is: 1,177.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,245.96 : 3,368.95 = 785.11 : x
  2. Step 2: Convert to fraction form
    2,245.96/3,368.95 = 785.11/x
  3. Step 3: Cross multiply
    2,245.96x = 3,368.95 × 785.11
  4. Step 4: Simplify right side
    2,245.96x = 2,645,006.72
  5. Step 5: Solve for x
    x = 2,645,006.72/2,245.96
  6. Step 6: Final answer
    x = 1,177.68

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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.