Home / 7,910.29-11,861.55-2,643.49

Finding the Fourth Proportional to 7,910.29, 11,861.55 and 2,643.49

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Solution

The fourth proportional to 7,910.29, 11,861.55 and 2,643.49 is: 3,963.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,910.29 : 11,861.55 = 2,643.49 : x
  2. Step 2: Convert to fraction form
    7,910.29/11,861.55 = 2,643.49/x
  3. Step 3: Cross multiply
    7,910.29x = 11,861.55 × 2,643.49
  4. Step 4: Simplify right side
    7,910.29x = 31,355,888.81
  5. Step 5: Solve for x
    x = 31,355,888.81/7,910.29
  6. Step 6: Final answer
    x = 3,963.94

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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.