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Finding the Fourth Proportional to 2,690.01, 4,034.91 and 742.16

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Solution

The fourth proportional to 2,690.01, 4,034.91 and 742.16 is: 1,113.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.01 : 4,034.91 = 742.16 : x
  2. Step 2: Convert to fraction form
    2,690.01/4,034.91 = 742.16/x
  3. Step 3: Cross multiply
    2,690.01x = 4,034.91 × 742.16
  4. Step 4: Simplify right side
    2,690.01x = 2,994,548.81
  5. Step 5: Solve for x
    x = 2,994,548.81/2,690.01
  6. Step 6: Final answer
    x = 1,113.21

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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.