Home / 1,491.16-2,236.83-669.40

Finding the Fourth Proportional to 1,491.16, 2,236.83 and 669.40

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Solution

The fourth proportional to 1,491.16, 2,236.83 and 669.40 is: 1,004.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,491.16 : 2,236.83 = 669.40 : x
  2. Step 2: Convert to fraction form
    1,491.16/2,236.83 = 669.40/x
  3. Step 3: Cross multiply
    1,491.16x = 2,236.83 × 669.40
  4. Step 4: Simplify right side
    1,491.16x = 1,497,334.00
  5. Step 5: Solve for x
    x = 1,497,334.00/1,491.16
  6. Step 6: Final answer
    x = 1,004.14

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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.