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Finding the Fourth Proportional to 3,752.39, 5,628.58 and 979.05

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Solution

The fourth proportional to 3,752.39, 5,628.58 and 979.05 is: 1,468.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,752.39 : 5,628.58 = 979.05 : x
  2. Step 2: Convert to fraction form
    3,752.39/5,628.58 = 979.05/x
  3. Step 3: Cross multiply
    3,752.39x = 5,628.58 × 979.05
  4. Step 4: Simplify right side
    3,752.39x = 5,510,661.25
  5. Step 5: Solve for x
    x = 5,510,661.25/3,752.39
  6. Step 6: Final answer
    x = 1,468.58

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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.