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Finding the Fourth Proportional to 2,289.98, 3,434.96 and 829.13

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Solution

The fourth proportional to 2,289.98, 3,434.96 and 829.13 is: 1,243.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.98 : 3,434.96 = 829.13 : x
  2. Step 2: Convert to fraction form
    2,289.98/3,434.96 = 829.13/x
  3. Step 3: Cross multiply
    2,289.98x = 3,434.96 × 829.13
  4. Step 4: Simplify right side
    2,289.98x = 2,848,024.24
  5. Step 5: Solve for x
    x = 2,848,024.24/2,289.98
  6. Step 6: Final answer
    x = 1,243.69

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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.