Home / 7,788.09-11,685.15-2,861.13

Finding the Fourth Proportional to 7,788.09, 11,685.15 and 2,861.13

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Solution

The fourth proportional to 7,788.09, 11,685.15 and 2,861.13 is: 4,292.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,788.09 : 11,685.15 = 2,861.13 : x
  2. Step 2: Convert to fraction form
    7,788.09/11,685.15 = 2,861.13/x
  3. Step 3: Cross multiply
    7,788.09x = 11,685.15 × 2,861.13
  4. Step 4: Simplify right side
    7,788.09x = 33,432,733.22
  5. Step 5: Solve for x
    x = 33,432,733.22/7,788.09
  6. Step 6: Final answer
    x = 4,292.80

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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.