Home / 3,386.89-5,078.98-1,305.74

Finding the Fourth Proportional to 3,386.89, 5,078.98 and 1,305.74

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Solution

The fourth proportional to 3,386.89, 5,078.98 and 1,305.74 is: 1,958.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,386.89 : 5,078.98 = 1,305.74 : x
  2. Step 2: Convert to fraction form
    3,386.89/5,078.98 = 1,305.74/x
  3. Step 3: Cross multiply
    3,386.89x = 5,078.98 × 1,305.74
  4. Step 4: Simplify right side
    3,386.89x = 6,631,827.35
  5. Step 5: Solve for x
    x = 6,631,827.35/3,386.89
  6. Step 6: Final answer
    x = 1,958.09

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1.5x scale

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.