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Finding the Fourth Proportional to 2,166.93, 2,990.02 and 1,235.25

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Solution

The fourth proportional to 2,166.93, 2,990.02 and 1,235.25 is: 1,704.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166.93 : 2,990.02 = 1,235.25 : x
  2. Step 2: Convert to fraction form
    2,166.93/2,990.02 = 1,235.25/x
  3. Step 3: Cross multiply
    2,166.93x = 2,990.02 × 1,235.25
  4. Step 4: Simplify right side
    2,166.93x = 3,693,422.21
  5. Step 5: Solve for x
    x = 3,693,422.21/2,166.93
  6. Step 6: Final answer
    x = 1,704.45

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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.