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Finding the Fourth Proportional to 3,329.88, 4,995.63 and 1,138.74

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Solution

The fourth proportional to 3,329.88, 4,995.63 and 1,138.74 is: 1,708.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,329.88 : 4,995.63 = 1,138.74 : x
  2. Step 2: Convert to fraction form
    3,329.88/4,995.63 = 1,138.74/x
  3. Step 3: Cross multiply
    3,329.88x = 4,995.63 × 1,138.74
  4. Step 4: Simplify right side
    3,329.88x = 5,688,723.71
  5. Step 5: Solve for x
    x = 5,688,723.71/3,329.88
  6. Step 6: Final answer
    x = 1,708.39

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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.