Home / 3,115.18-4,298.16-1,788.81

Finding the Fourth Proportional to 3,115.18, 4,298.16 and 1,788.81

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Solution

The fourth proportional to 3,115.18, 4,298.16 and 1,788.81 is: 2,468.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.18 : 4,298.16 = 1,788.81 : x
  2. Step 2: Convert to fraction form
    3,115.18/4,298.16 = 1,788.81/x
  3. Step 3: Cross multiply
    3,115.18x = 4,298.16 × 1,788.81
  4. Step 4: Simplify right side
    3,115.18x = 7,688,591.59
  5. Step 5: Solve for x
    x = 7,688,591.59/3,115.18
  6. Step 6: Final answer
    x = 2,468.11

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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.