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Finding the Third Proportional to 785.95 and 1,379.53

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Solution

The third proportional to 785.95 and 1,379.53 is: 2,421.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    785.95 : 1,379.53 = 1,379.53 : x
  2. Step 2: Convert to fraction form
    785.95/1,379.53 = 1,379.53/x
  3. Step 3: Cross multiply
    785.95x = 1,379.53 × 1,379.53
  4. Step 4: Simplify right side
    785.95x = 1,903,106.47
  5. Step 5: Solve for x
    x = 1,903,106.47/785.95
  6. Step 6: Final answer
    x = 2,421.40

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Why These Related Problems?

These problems maintain the same ratio (1.76) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.