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Finding the Fourth Proportional to 2,066.56, 3,099.84 and 913.12

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Solution

The fourth proportional to 2,066.56, 3,099.84 and 913.12 is: 1,369.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,066.56 : 3,099.84 = 913.12 : x
  2. Step 2: Convert to fraction form
    2,066.56/3,099.84 = 913.12/x
  3. Step 3: Cross multiply
    2,066.56x = 3,099.84 × 913.12
  4. Step 4: Simplify right side
    2,066.56x = 2,830,525.90
  5. Step 5: Solve for x
    x = 2,830,525.90/2,066.56
  6. Step 6: Final answer
    x = 1,369.68

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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.