Home / 7,780.86-11,672.91-2,587.14

Finding the Fourth Proportional to 7,780.86, 11,672.91 and 2,587.14

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Solution

The fourth proportional to 7,780.86, 11,672.91 and 2,587.14 is: 3,881.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.86 : 11,672.91 = 2,587.14 : x
  2. Step 2: Convert to fraction form
    7,780.86/11,672.91 = 2,587.14/x
  3. Step 3: Cross multiply
    7,780.86x = 11,672.91 × 2,587.14
  4. Step 4: Simplify right side
    7,780.86x = 30,199,452.38
  5. Step 5: Solve for x
    x = 30,199,452.38/7,780.86
  6. Step 6: Final answer
    x = 3,881.25

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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.