Home / 3,118.74-4,678.75-1,269.85

Finding the Fourth Proportional to 3,118.74, 4,678.75 and 1,269.85

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Solution

The fourth proportional to 3,118.74, 4,678.75 and 1,269.85 is: 1,905.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.74 : 4,678.75 = 1,269.85 : x
  2. Step 2: Convert to fraction form
    3,118.74/4,678.75 = 1,269.85/x
  3. Step 3: Cross multiply
    3,118.74x = 4,678.75 × 1,269.85
  4. Step 4: Simplify right side
    3,118.74x = 5,941,310.69
  5. Step 5: Solve for x
    x = 5,941,310.69/3,118.74
  6. Step 6: Final answer
    x = 1,905.04

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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.