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Finding the Fourth Proportional to 3,031.68, 4,183.68 and 1,705.68

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Solution

The fourth proportional to 3,031.68, 4,183.68 and 1,705.68 is: 2,353.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.68 : 4,183.68 = 1,705.68 : x
  2. Step 2: Convert to fraction form
    3,031.68/4,183.68 = 1,705.68/x
  3. Step 3: Cross multiply
    3,031.68x = 4,183.68 × 1,705.68
  4. Step 4: Simplify right side
    3,031.68x = 7,136,019.30
  5. Step 5: Solve for x
    x = 7,136,019.30/3,031.68
  6. Step 6: Final answer
    x = 2,353.82

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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.