Home / 2,508.67-3,461.88-1,389.65

Finding the Fourth Proportional to 2,508.67, 3,461.88 and 1,389.65

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Solution

The fourth proportional to 2,508.67, 3,461.88 and 1,389.65 is: 1,917.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,508.67 : 3,461.88 = 1,389.65 : x
  2. Step 2: Convert to fraction form
    2,508.67/3,461.88 = 1,389.65/x
  3. Step 3: Cross multiply
    2,508.67x = 3,461.88 × 1,389.65
  4. Step 4: Simplify right side
    2,508.67x = 4,810,801.54
  5. Step 5: Solve for x
    x = 4,810,801.54/2,508.67
  6. Step 6: Final answer
    x = 1,917.67

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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.