Home / 2,540.60-3,506.10-1,421.58

Finding the Fourth Proportional to 2,540.60, 3,506.10 and 1,421.58

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Solution

The fourth proportional to 2,540.60, 3,506.10 and 1,421.58 is: 1,961.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,540.60 : 3,506.10 = 1,421.58 : x
  2. Step 2: Convert to fraction form
    2,540.60/3,506.10 = 1,421.58/x
  3. Step 3: Cross multiply
    2,540.60x = 3,506.10 × 1,421.58
  4. Step 4: Simplify right side
    2,540.60x = 4,984,201.64
  5. Step 5: Solve for x
    x = 4,984,201.64/2,540.60
  6. Step 6: Final answer
    x = 1,961.82

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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.