Home / 3,578.24-5,368.26-1,386.40

Finding the Fourth Proportional to 3,578.24, 5,368.26 and 1,386.40

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Solution

The fourth proportional to 3,578.24, 5,368.26 and 1,386.40 is: 2,079.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.24 : 5,368.26 = 1,386.40 : x
  2. Step 2: Convert to fraction form
    3,578.24/5,368.26 = 1,386.40/x
  3. Step 3: Cross multiply
    3,578.24x = 5,368.26 × 1,386.40
  4. Step 4: Simplify right side
    3,578.24x = 7,442,555.66
  5. Step 5: Solve for x
    x = 7,442,555.66/3,578.24
  6. Step 6: Final answer
    x = 2,079.95

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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.