Home / 2,508.60-3,461.82-1,389.60

Finding the Fourth Proportional to 2,508.60, 3,461.82 and 1,389.60

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Solution

The fourth proportional to 2,508.60, 3,461.82 and 1,389.60 is: 1,917.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,508.60 : 3,461.82 = 1,389.60 : x
  2. Step 2: Convert to fraction form
    2,508.60/3,461.82 = 1,389.60/x
  3. Step 3: Cross multiply
    2,508.60x = 3,461.82 × 1,389.60
  4. Step 4: Simplify right side
    2,508.60x = 4,810,537.94
  5. Step 5: Solve for x
    x = 4,810,537.94/2,508.60
  6. Step 6: Final answer
    x = 1,917.62

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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.