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Finding the Fourth Proportional to 6,711.88, 9,271.11 and 5,108.79

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Solution

The fourth proportional to 6,711.88, 9,271.11 and 5,108.79 is: 7,056.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,711.88 : 9,271.11 = 5,108.79 : x
  2. Step 2: Convert to fraction form
    6,711.88/9,271.11 = 5,108.79/x
  3. Step 3: Cross multiply
    6,711.88x = 9,271.11 × 5,108.79
  4. Step 4: Simplify right side
    6,711.88x = 47,364,128.51
  5. Step 5: Solve for x
    x = 47,364,128.51/6,711.88
  6. Step 6: Final answer
    x = 7,056.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.