Home / 2,918.08-4,378.24-1,379.20

Finding the Fourth Proportional to 2,918.08, 4,378.24 and 1,379.20

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Solution

The fourth proportional to 2,918.08, 4,378.24 and 1,379.20 is: 2,069.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.08 : 4,378.24 = 1,379.20 : x
  2. Step 2: Convert to fraction form
    2,918.08/4,378.24 = 1,379.20/x
  3. Step 3: Cross multiply
    2,918.08x = 4,378.24 × 1,379.20
  4. Step 4: Simplify right side
    2,918.08x = 6,038,468.61
  5. Step 5: Solve for x
    x = 6,038,468.61/2,918.08
  6. Step 6: Final answer
    x = 2,069.33

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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.