Home / 5,268.87-7,901.37-1,981.08

Finding the Fourth Proportional to 5,268.87, 7,901.37 and 1,981.08

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Solution

The fourth proportional to 5,268.87, 7,901.37 and 1,981.08 is: 2,970.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,268.87 : 7,901.37 = 1,981.08 : x
  2. Step 2: Convert to fraction form
    5,268.87/7,901.37 = 1,981.08/x
  3. Step 3: Cross multiply
    5,268.87x = 7,901.37 × 1,981.08
  4. Step 4: Simplify right side
    5,268.87x = 15,653,246.08
  5. Step 5: Solve for x
    x = 15,653,246.08/5,268.87
  6. Step 6: Final answer
    x = 2,970.89

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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.