Home / 2,555.40-3,503.85-2,305.74

Finding the Fourth Proportional to 2,555.40, 3,503.85 and 2,305.74

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Solution

The fourth proportional to 2,555.40, 3,503.85 and 2,305.74 is: 3,161.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,555.40 : 3,503.85 = 2,305.74 : x
  2. Step 2: Convert to fraction form
    2,555.40/3,503.85 = 2,305.74/x
  3. Step 3: Cross multiply
    2,555.40x = 3,503.85 × 2,305.74
  4. Step 4: Simplify right side
    2,555.40x = 8,078,967.10
  5. Step 5: Solve for x
    x = 8,078,967.10/2,555.40
  6. Step 6: Final answer
    x = 3,161.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.