Home / 1,259.96-1,890.07-438.04

Finding the Fourth Proportional to 1,259.96, 1,890.07 and 438.04

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Solution

The fourth proportional to 1,259.96, 1,890.07 and 438.04 is: 657.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259.96 : 1,890.07 = 438.04 : x
  2. Step 2: Convert to fraction form
    1,259.96/1,890.07 = 438.04/x
  3. Step 3: Cross multiply
    1,259.96x = 1,890.07 × 438.04
  4. Step 4: Simplify right side
    1,259.96x = 827,927.53
  5. Step 5: Solve for x
    x = 827,927.53/1,259.96
  6. Step 6: Final answer
    x = 657.11

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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.