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Finding the Fourth Proportional to 2,060, 3,090.08 and 762.40

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Solution

The fourth proportional to 2,060, 3,090.08 and 762.40 is: 1,143.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,060 : 3,090.08 = 762.40 : x
  2. Step 2: Convert to fraction form
    2,060/3,090.08 = 762.40/x
  3. Step 3: Cross multiply
    2,060x = 3,090.08 × 762.40
  4. Step 4: Simplify right side
    2,060x = 2,355,876.99
  5. Step 5: Solve for x
    x = 2,355,876.99/2,060
  6. Step 6: Final answer
    x = 1,143.63

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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.