Home / 2,487.96-3,433.19-1,440.09

Finding the Fourth Proportional to 2,487.96, 3,433.19 and 1,440.09

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Solution

The fourth proportional to 2,487.96, 3,433.19 and 1,440.09 is: 1,987.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.96 : 3,433.19 = 1,440.09 : x
  2. Step 2: Convert to fraction form
    2,487.96/3,433.19 = 1,440.09/x
  3. Step 3: Cross multiply
    2,487.96x = 3,433.19 × 1,440.09
  4. Step 4: Simplify right side
    2,487.96x = 4,944,095.39
  5. Step 5: Solve for x
    x = 4,944,095.39/2,487.96
  6. Step 6: Final answer
    x = 1,987.21

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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.