Home / 1,491.39-2,238.56-1,119.91

Finding the Fourth Proportional to 1,491.39, 2,238.56 and 1,119.91

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Solution

The fourth proportional to 1,491.39, 2,238.56 and 1,119.91 is: 1,680.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,491.39 : 2,238.56 = 1,119.91 : x
  2. Step 2: Convert to fraction form
    1,491.39/2,238.56 = 1,119.91/x
  3. Step 3: Cross multiply
    1,491.39x = 2,238.56 × 1,119.91
  4. Step 4: Simplify right side
    1,491.39x = 2,506,968.94
  5. Step 5: Solve for x
    x = 2,506,968.94/1,491.39
  6. Step 6: Final answer
    x = 1,680.96

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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.