Home / 7,811.10-11,718.36-2,616.84

Finding the Fourth Proportional to 7,811.10, 11,718.36 and 2,616.84

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Solution

The fourth proportional to 7,811.10, 11,718.36 and 2,616.84 is: 3,925.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.10 : 11,718.36 = 2,616.84 : x
  2. Step 2: Convert to fraction form
    7,811.10/11,718.36 = 2,616.84/x
  3. Step 3: Cross multiply
    7,811.10x = 11,718.36 × 2,616.84
  4. Step 4: Simplify right side
    7,811.10x = 30,665,073.18
  5. Step 5: Solve for x
    x = 30,665,073.18/7,811.10
  6. Step 6: Final answer
    x = 3,925.83

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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.