Home / 2,117.15-3,172.64-2,000.30

Finding the Fourth Proportional to 2,117.15, 3,172.64 and 2,000.30

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Solution

The fourth proportional to 2,117.15, 3,172.64 and 2,000.30 is: 2,997.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.15 : 3,172.64 = 2,000.30 : x
  2. Step 2: Convert to fraction form
    2,117.15/3,172.64 = 2,000.30/x
  3. Step 3: Cross multiply
    2,117.15x = 3,172.64 × 2,000.30
  4. Step 4: Simplify right side
    2,117.15x = 6,346,221.79
  5. Step 5: Solve for x
    x = 6,346,221.79/2,117.15
  6. Step 6: Final answer
    x = 2,997.53

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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.