Home / 3,578.85-5,366.34-1,386.99

Finding the Fourth Proportional to 3,578.85, 5,366.34 and 1,386.99

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Solution

The fourth proportional to 3,578.85, 5,366.34 and 1,386.99 is: 2,079.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.85 : 5,366.34 = 1,386.99 : x
  2. Step 2: Convert to fraction form
    3,578.85/5,366.34 = 1,386.99/x
  3. Step 3: Cross multiply
    3,578.85x = 5,366.34 × 1,386.99
  4. Step 4: Simplify right side
    3,578.85x = 7,443,059.92
  5. Step 5: Solve for x
    x = 7,443,059.92/3,578.85
  6. Step 6: Final answer
    x = 2,079.74

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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.