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Finding the Fourth Proportional to 3,090.43, 4,635.61 and 750.46

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Solution

The fourth proportional to 3,090.43, 4,635.61 and 750.46 is: 1,125.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.43 : 4,635.61 = 750.46 : x
  2. Step 2: Convert to fraction form
    3,090.43/4,635.61 = 750.46/x
  3. Step 3: Cross multiply
    3,090.43x = 4,635.61 × 750.46
  4. Step 4: Simplify right side
    3,090.43x = 3,478,812.95
  5. Step 5: Solve for x
    x = 3,478,812.95/3,090.43
  6. Step 6: Final answer
    x = 1,125.67

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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.