Home / 7,788.39-11,679.72-6,125.76

Finding the Fourth Proportional to 7,788.39, 11,679.72 and 6,125.76

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Solution

The fourth proportional to 7,788.39, 11,679.72 and 6,125.76 is: 9,186.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,788.39 : 11,679.72 = 6,125.76 : x
  2. Step 2: Convert to fraction form
    7,788.39/11,679.72 = 6,125.76/x
  3. Step 3: Cross multiply
    7,788.39x = 11,679.72 × 6,125.76
  4. Step 4: Simplify right side
    7,788.39x = 71,547,161.59
  5. Step 5: Solve for x
    x = 71,547,161.59/7,788.39
  6. Step 6: Final answer
    x = 9,186.39

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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.