Home / 6,891.15-9,511.53-3,908.76

Finding the Fourth Proportional to 6,891.15, 9,511.53 and 3,908.76

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Solution

The fourth proportional to 6,891.15, 9,511.53 and 3,908.76 is: 5,395.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,891.15 : 9,511.53 = 3,908.76 : x
  2. Step 2: Convert to fraction form
    6,891.15/9,511.53 = 3,908.76/x
  3. Step 3: Cross multiply
    6,891.15x = 9,511.53 × 3,908.76
  4. Step 4: Simplify right side
    6,891.15x = 37,178,288.00
  5. Step 5: Solve for x
    x = 37,178,288.00/6,891.15
  6. Step 6: Final answer
    x = 5,395.08

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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.