Home / 6,875.70-9,487.26-3,891.12

Finding the Fourth Proportional to 6,875.70, 9,487.26 and 3,891.12

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Solution

The fourth proportional to 6,875.70, 9,487.26 and 3,891.12 is: 5,369.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,875.70 : 9,487.26 = 3,891.12 : x
  2. Step 2: Convert to fraction form
    6,875.70/9,487.26 = 3,891.12/x
  3. Step 3: Cross multiply
    6,875.70x = 9,487.26 × 3,891.12
  4. Step 4: Simplify right side
    6,875.70x = 36,916,067.13
  5. Step 5: Solve for x
    x = 36,916,067.13/6,875.70
  6. Step 6: Final answer
    x = 5,369.06

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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.