Home / 3,119.09-4,304.34-1,721.84

Finding the Fourth Proportional to 3,119.09, 4,304.34 and 1,721.84

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Solution

The fourth proportional to 3,119.09, 4,304.34 and 1,721.84 is: 2,376.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.09 : 4,304.34 = 1,721.84 : x
  2. Step 2: Convert to fraction form
    3,119.09/4,304.34 = 1,721.84/x
  3. Step 3: Cross multiply
    3,119.09x = 4,304.34 × 1,721.84
  4. Step 4: Simplify right side
    3,119.09x = 7,411,363.26
  5. Step 5: Solve for x
    x = 7,411,363.26/3,119.09
  6. Step 6: Final answer
    x = 2,376.13

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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.