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Finding the Fourth Proportional to 3,161.36, 4,362.68 and 1,835.32

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Solution

The fourth proportional to 3,161.36, 4,362.68 and 1,835.32 is: 2,532.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.36 : 4,362.68 = 1,835.32 : x
  2. Step 2: Convert to fraction form
    3,161.36/4,362.68 = 1,835.32/x
  3. Step 3: Cross multiply
    3,161.36x = 4,362.68 × 1,835.32
  4. Step 4: Simplify right side
    3,161.36x = 8,006,913.86
  5. Step 5: Solve for x
    x = 8,006,913.86/3,161.36
  6. Step 6: Final answer
    x = 2,532.74

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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.