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Finding the Fourth Proportional to 3,090.42, 4,635.59 and 750.45

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Solution

The fourth proportional to 3,090.42, 4,635.59 and 750.45 is: 1,125.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.42 : 4,635.59 = 750.45 : x
  2. Step 2: Convert to fraction form
    3,090.42/4,635.59 = 750.45/x
  3. Step 3: Cross multiply
    3,090.42x = 4,635.59 × 750.45
  4. Step 4: Simplify right side
    3,090.42x = 3,478,755.14
  5. Step 5: Solve for x
    x = 3,478,755.14/3,090.42
  6. Step 6: Final answer
    x = 1,125.66

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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.