Home / 5,811.91-8,715.14-2,111.56

Finding the Fourth Proportional to 5,811.91, 8,715.14 and 2,111.56

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Solution

The fourth proportional to 5,811.91, 8,715.14 and 2,111.56 is: 3,166.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811.91 : 8,715.14 = 2,111.56 : x
  2. Step 2: Convert to fraction form
    5,811.91/8,715.14 = 2,111.56/x
  3. Step 3: Cross multiply
    5,811.91x = 8,715.14 × 2,111.56
  4. Step 4: Simplify right side
    5,811.91x = 18,402,541.02
  5. Step 5: Solve for x
    x = 18,402,541.02/5,811.91
  6. Step 6: Final answer
    x = 3,166.35

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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.