Home / 1,965.17-2,712-1,081.01

Finding the Fourth Proportional to 1,965.17, 2,712 and 1,081.01

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Solution

The fourth proportional to 1,965.17, 2,712 and 1,081.01 is: 1,491.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965.17 : 2,712 = 1,081.01 : x
  2. Step 2: Convert to fraction form
    1,965.17/2,712 = 1,081.01/x
  3. Step 3: Cross multiply
    1,965.17x = 2,712 × 1,081.01
  4. Step 4: Simplify right side
    1,965.17x = 2,931,685.56
  5. Step 5: Solve for x
    x = 2,931,685.56/1,965.17
  6. Step 6: Final answer
    x = 1,491.83

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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.