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Finding the Fourth Proportional to 3,065.19, 4,229.19 and 1,720.46

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Solution

The fourth proportional to 3,065.19, 4,229.19 and 1,720.46 is: 2,373.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,065.19 : 4,229.19 = 1,720.46 : x
  2. Step 2: Convert to fraction form
    3,065.19/4,229.19 = 1,720.46/x
  3. Step 3: Cross multiply
    3,065.19x = 4,229.19 × 1,720.46
  4. Step 4: Simplify right side
    3,065.19x = 7,276,131.08
  5. Step 5: Solve for x
    x = 7,276,131.08/3,065.19
  6. Step 6: Final answer
    x = 2,373.79

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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.