Home / 1,440.92-2,161.68-619.28

Finding the Fourth Proportional to 1,440.92, 2,161.68 and 619.28

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Solution

The fourth proportional to 1,440.92, 2,161.68 and 619.28 is: 929.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.92 : 2,161.68 = 619.28 : x
  2. Step 2: Convert to fraction form
    1,440.92/2,161.68 = 619.28/x
  3. Step 3: Cross multiply
    1,440.92x = 2,161.68 × 619.28
  4. Step 4: Simplify right side
    1,440.92x = 1,338,685.19
  5. Step 5: Solve for x
    x = 1,338,685.19/1,440.92
  6. Step 6: Final answer
    x = 929.05

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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.