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Finding the Fourth Proportional to 2,170.01, 2,994.62 and 1,225.81

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Solution

The fourth proportional to 2,170.01, 2,994.62 and 1,225.81 is: 1,691.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.01 : 2,994.62 = 1,225.81 : x
  2. Step 2: Convert to fraction form
    2,170.01/2,994.62 = 1,225.81/x
  3. Step 3: Cross multiply
    2,170.01x = 2,994.62 × 1,225.81
  4. Step 4: Simplify right side
    2,170.01x = 3,670,817.10
  5. Step 5: Solve for x
    x = 3,670,817.10/2,170.01
  6. Step 6: Final answer
    x = 1,691.61

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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.