Home / 3,001.09-4,139.78-1,805.25

Finding the Fourth Proportional to 3,001.09, 4,139.78 and 1,805.25

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Solution

The fourth proportional to 3,001.09, 4,139.78 and 1,805.25 is: 2,490.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,001.09 : 4,139.78 = 1,805.25 : x
  2. Step 2: Convert to fraction form
    3,001.09/4,139.78 = 1,805.25/x
  3. Step 3: Cross multiply
    3,001.09x = 4,139.78 × 1,805.25
  4. Step 4: Simplify right side
    3,001.09x = 7,473,337.85
  5. Step 5: Solve for x
    x = 7,473,337.85/3,001.09
  6. Step 6: Final answer
    x = 2,490.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.