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Finding the Fourth Proportional to 2,151.35, 3,226.96 and 612.35

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Solution

The fourth proportional to 2,151.35, 3,226.96 and 612.35 is: 918.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.35 : 3,226.96 = 612.35 : x
  2. Step 2: Convert to fraction form
    2,151.35/3,226.96 = 612.35/x
  3. Step 3: Cross multiply
    2,151.35x = 3,226.96 × 612.35
  4. Step 4: Simplify right side
    2,151.35x = 1,976,022.24
  5. Step 5: Solve for x
    x = 1,976,022.24/2,151.35
  6. Step 6: Final answer
    x = 918.50

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Double scale
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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.