Home / 2,335.15-3,221.69-1,587.81

Finding the Fourth Proportional to 2,335.15, 3,221.69 and 1,587.81

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Solution

The fourth proportional to 2,335.15, 3,221.69 and 1,587.81 is: 2,190.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,335.15 : 3,221.69 = 1,587.81 : x
  2. Step 2: Convert to fraction form
    2,335.15/3,221.69 = 1,587.81/x
  3. Step 3: Cross multiply
    2,335.15x = 3,221.69 × 1,587.81
  4. Step 4: Simplify right side
    2,335.15x = 5,115,431.60
  5. Step 5: Solve for x
    x = 5,115,431.60/2,335.15
  6. Step 6: Final answer
    x = 2,190.62

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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.