Home / 4,390.12-6,587.78-1,618.73

Finding the Fourth Proportional to 4,390.12, 6,587.78 and 1,618.73

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Solution

The fourth proportional to 4,390.12, 6,587.78 and 1,618.73 is: 2,429.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,390.12 : 6,587.78 = 1,618.73 : x
  2. Step 2: Convert to fraction form
    4,390.12/6,587.78 = 1,618.73/x
  3. Step 3: Cross multiply
    4,390.12x = 6,587.78 × 1,618.73
  4. Step 4: Simplify right side
    4,390.12x = 10,663,820.79
  5. Step 5: Solve for x
    x = 10,663,820.79/4,390.12
  6. Step 6: Final answer
    x = 2,429.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.