Home / 1,339.50-2,009.25-609.29

Finding the Fourth Proportional to 1,339.50, 2,009.25 and 609.29

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Solution

The fourth proportional to 1,339.50, 2,009.25 and 609.29 is: 913.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339.50 : 2,009.25 = 609.29 : x
  2. Step 2: Convert to fraction form
    1,339.50/2,009.25 = 609.29/x
  3. Step 3: Cross multiply
    1,339.50x = 2,009.25 × 609.29
  4. Step 4: Simplify right side
    1,339.50x = 1,224,205.89
  5. Step 5: Solve for x
    x = 1,224,205.89/1,339.50
  6. Step 6: Final answer
    x = 913.93

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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.