Home / 2,379.78-3,284.19-1,317.60

Finding the Fourth Proportional to 2,379.78, 3,284.19 and 1,317.60

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Solution

The fourth proportional to 2,379.78, 3,284.19 and 1,317.60 is: 1,818.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379.78 : 3,284.19 = 1,317.60 : x
  2. Step 2: Convert to fraction form
    2,379.78/3,284.19 = 1,317.60/x
  3. Step 3: Cross multiply
    2,379.78x = 3,284.19 × 1,317.60
  4. Step 4: Simplify right side
    2,379.78x = 4,327,248.74
  5. Step 5: Solve for x
    x = 4,327,248.74/2,379.78
  6. Step 6: Final answer
    x = 1,818.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.