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Finding the Fourth Proportional to 3,345.40, 5,018.10 and 1,614.20

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Solution

The fourth proportional to 3,345.40, 5,018.10 and 1,614.20 is: 2,421.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,345.40 : 5,018.10 = 1,614.20 : x
  2. Step 2: Convert to fraction form
    3,345.40/5,018.10 = 1,614.20/x
  3. Step 3: Cross multiply
    3,345.40x = 5,018.10 × 1,614.20
  4. Step 4: Simplify right side
    3,345.40x = 8,100,217.02
  5. Step 5: Solve for x
    x = 8,100,217.02/3,345.40
  6. Step 6: Final answer
    x = 2,421.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.