Home / 1,440.59-2,160.81-619.38

Finding the Fourth Proportional to 1,440.59, 2,160.81 and 619.38

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Solution

The fourth proportional to 1,440.59, 2,160.81 and 619.38 is: 929.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.59 : 2,160.81 = 619.38 : x
  2. Step 2: Convert to fraction form
    1,440.59/2,160.81 = 619.38/x
  3. Step 3: Cross multiply
    1,440.59x = 2,160.81 × 619.38
  4. Step 4: Simplify right side
    1,440.59x = 1,338,362.50
  5. Step 5: Solve for x
    x = 1,338,362.50/1,440.59
  6. Step 6: Final answer
    x = 929.04

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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.