Home / 7,813.77-11,719.39-2,885.73

Finding the Fourth Proportional to 7,813.77, 11,719.39 and 2,885.73

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Solution

The fourth proportional to 7,813.77, 11,719.39 and 2,885.73 is: 4,328.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,813.77 : 11,719.39 = 2,885.73 : x
  2. Step 2: Convert to fraction form
    7,813.77/11,719.39 = 2,885.73/x
  3. Step 3: Cross multiply
    7,813.77x = 11,719.39 × 2,885.73
  4. Step 4: Simplify right side
    7,813.77x = 33,818,995.30
  5. Step 5: Solve for x
    x = 33,818,995.30/7,813.77
  6. Step 6: Final answer
    x = 4,328.13

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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.