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Finding the Fourth Proportional to 2,109.52, 3,165.96 and 955.36

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Solution

The fourth proportional to 2,109.52, 3,165.96 and 955.36 is: 1,433.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,109.52 : 3,165.96 = 955.36 : x
  2. Step 2: Convert to fraction form
    2,109.52/3,165.96 = 955.36/x
  3. Step 3: Cross multiply
    2,109.52x = 3,165.96 × 955.36
  4. Step 4: Simplify right side
    2,109.52x = 3,024,631.55
  5. Step 5: Solve for x
    x = 3,024,631.55/2,109.52
  6. Step 6: Final answer
    x = 1,433.80

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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.