Home / 1,718.31-2,572.61-1,330.12

Finding the Fourth Proportional to 1,718.31, 2,572.61 and 1,330.12

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Solution

The fourth proportional to 1,718.31, 2,572.61 and 1,330.12 is: 1,991.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,718.31 : 2,572.61 = 1,330.12 : x
  2. Step 2: Convert to fraction form
    1,718.31/2,572.61 = 1,330.12/x
  3. Step 3: Cross multiply
    1,718.31x = 2,572.61 × 1,330.12
  4. Step 4: Simplify right side
    1,718.31x = 3,421,884.06
  5. Step 5: Solve for x
    x = 3,421,884.06/1,718.31
  6. Step 6: Final answer
    x = 1,991.42

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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.