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Finding the Fourth Proportional to 2,699.59, 4,048.80 and 850.45

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Solution

The fourth proportional to 2,699.59, 4,048.80 and 850.45 is: 1,275.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,699.59 : 4,048.80 = 850.45 : x
  2. Step 2: Convert to fraction form
    2,699.59/4,048.80 = 850.45/x
  3. Step 3: Cross multiply
    2,699.59x = 4,048.80 × 850.45
  4. Step 4: Simplify right side
    2,699.59x = 3,443,301.96
  5. Step 5: Solve for x
    x = 3,443,301.96/2,699.59
  6. Step 6: Final answer
    x = 1,275.49

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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.