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Finding the Third Proportional to 5,390.30 and 11,779.17

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Solution

The third proportional to 5,390.30 and 11,779.17 is: 25,740.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.30 : 11,779.17 = 11,779.17 : x
  2. Step 2: Convert to fraction form
    5,390.30/11,779.17 = 11,779.17/x
  3. Step 3: Cross multiply
    5,390.30x = 11,779.17 × 11,779.17
  4. Step 4: Simplify right side
    5,390.30x = 138,748,890.06
  5. Step 5: Solve for x
    x = 138,748,890.06/5,390.30
  6. Step 6: Final answer
    x = 25,740.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.