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Finding the Fourth Proportional to 3,065.34, 4,230.62 and 1,721.10

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Solution

The fourth proportional to 3,065.34, 4,230.62 and 1,721.10 is: 2,375.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,065.34 : 4,230.62 = 1,721.10 : x
  2. Step 2: Convert to fraction form
    3,065.34/4,230.62 = 1,721.10/x
  3. Step 3: Cross multiply
    3,065.34x = 4,230.62 × 1,721.10
  4. Step 4: Simplify right side
    3,065.34x = 7,281,311.48
  5. Step 5: Solve for x
    x = 7,281,311.48/3,065.34
  6. Step 6: Final answer
    x = 2,375.37

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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.