Home / 7,711.88-11,571.40-2,447.72

Finding the Fourth Proportional to 7,711.88, 11,571.40 and 2,447.72

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Solution

The fourth proportional to 7,711.88, 11,571.40 and 2,447.72 is: 3,672.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,711.88 : 11,571.40 = 2,447.72 : x
  2. Step 2: Convert to fraction form
    7,711.88/11,571.40 = 2,447.72/x
  3. Step 3: Cross multiply
    7,711.88x = 11,571.40 × 2,447.72
  4. Step 4: Simplify right side
    7,711.88x = 28,323,547.21
  5. Step 5: Solve for x
    x = 28,323,547.21/7,711.88
  6. Step 6: Final answer
    x = 3,672.72

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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.