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Finding the Fourth Proportional to 2,390.42, 3,584.28 and 746.66

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Solution

The fourth proportional to 2,390.42, 3,584.28 and 746.66 is: 1,119.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.42 : 3,584.28 = 746.66 : x
  2. Step 2: Convert to fraction form
    2,390.42/3,584.28 = 746.66/x
  3. Step 3: Cross multiply
    2,390.42x = 3,584.28 × 746.66
  4. Step 4: Simplify right side
    2,390.42x = 2,676,238.50
  5. Step 5: Solve for x
    x = 2,676,238.50/2,390.42
  6. Step 6: Final answer
    x = 1,119.57

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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.