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Finding the Fourth Proportional to 3,090.68, 4,635.98 and 750.71

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Solution

The fourth proportional to 3,090.68, 4,635.98 and 750.71 is: 1,126.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.68 : 4,635.98 = 750.71 : x
  2. Step 2: Convert to fraction form
    3,090.68/4,635.98 = 750.71/x
  3. Step 3: Cross multiply
    3,090.68x = 4,635.98 × 750.71
  4. Step 4: Simplify right side
    3,090.68x = 3,480,249.61
  5. Step 5: Solve for x
    x = 3,480,249.61/3,090.68
  6. Step 6: Final answer
    x = 1,126.05

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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.