Home / 4,117.70-5,679.15-3,619.28

Finding the Fourth Proportional to 4,117.70, 5,679.15 and 3,619.28

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Solution

The fourth proportional to 4,117.70, 5,679.15 and 3,619.28 is: 4,991.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,117.70 : 5,679.15 = 3,619.28 : x
  2. Step 2: Convert to fraction form
    4,117.70/5,679.15 = 3,619.28/x
  3. Step 3: Cross multiply
    4,117.70x = 5,679.15 × 3,619.28
  4. Step 4: Simplify right side
    4,117.70x = 20,554,434.64
  5. Step 5: Solve for x
    x = 20,554,434.64/4,117.70
  6. Step 6: Final answer
    x = 4,991.72

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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.