Home / 2,508.88-3,462.20-1,389.75

Finding the Fourth Proportional to 2,508.88, 3,462.20 and 1,389.75

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Solution

The fourth proportional to 2,508.88, 3,462.20 and 1,389.75 is: 1,917.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,508.88 : 3,462.20 = 1,389.75 : x
  2. Step 2: Convert to fraction form
    2,508.88/3,462.20 = 1,389.75/x
  3. Step 3: Cross multiply
    2,508.88x = 3,462.20 × 1,389.75
  4. Step 4: Simplify right side
    2,508.88x = 4,811,585.50
  5. Step 5: Solve for x
    x = 4,811,585.50/2,508.88
  6. Step 6: Final answer
    x = 1,917.82

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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.