Home / 2,600.10-3,587.96-1,421.15

Finding the Fourth Proportional to 2,600.10, 3,587.96 and 1,421.15

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Solution

The fourth proportional to 2,600.10, 3,587.96 and 1,421.15 is: 1,961.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,600.10 : 3,587.96 = 1,421.15 : x
  2. Step 2: Convert to fraction form
    2,600.10/3,587.96 = 1,421.15/x
  3. Step 3: Cross multiply
    2,600.10x = 3,587.96 × 1,421.15
  4. Step 4: Simplify right side
    2,600.10x = 5,099,014.97
  5. Step 5: Solve for x
    x = 5,099,014.97/2,600.10
  6. Step 6: Final answer
    x = 1,961.08

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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.