Home / 2,918.60-4,377.89-1,069.86

Finding the Fourth Proportional to 2,918.60, 4,377.89 and 1,069.86

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Solution

The fourth proportional to 2,918.60, 4,377.89 and 1,069.86 is: 1,604.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.60 : 4,377.89 = 1,069.86 : x
  2. Step 2: Convert to fraction form
    2,918.60/4,377.89 = 1,069.86/x
  3. Step 3: Cross multiply
    2,918.60x = 4,377.89 × 1,069.86
  4. Step 4: Simplify right side
    2,918.60x = 4,683,729.40
  5. Step 5: Solve for x
    x = 4,683,729.40/2,918.60
  6. Step 6: Final answer
    x = 1,604.79

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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.