Home / 7,716.45-10,638.75-6,298.68

Finding the Fourth Proportional to 7,716.45, 10,638.75 and 6,298.68

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Solution

The fourth proportional to 7,716.45, 10,638.75 and 6,298.68 is: 8,684.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,716.45 : 10,638.75 = 6,298.68 : x
  2. Step 2: Convert to fraction form
    7,716.45/10,638.75 = 6,298.68/x
  3. Step 3: Cross multiply
    7,716.45x = 10,638.75 × 6,298.68
  4. Step 4: Simplify right side
    7,716.45x = 67,010,081.85
  5. Step 5: Solve for x
    x = 67,010,081.85/7,716.45
  6. Step 6: Final answer
    x = 8,684.06

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.