Home / 3,390.11-4,678.30-1,898.02

Finding the Fourth Proportional to 3,390.11, 4,678.30 and 1,898.02

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Solution

The fourth proportional to 3,390.11, 4,678.30 and 1,898.02 is: 2,619.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.11 : 4,678.30 = 1,898.02 : x
  2. Step 2: Convert to fraction form
    3,390.11/4,678.30 = 1,898.02/x
  3. Step 3: Cross multiply
    3,390.11x = 4,678.30 × 1,898.02
  4. Step 4: Simplify right side
    3,390.11x = 8,879,515.19
  5. Step 5: Solve for x
    x = 8,879,515.19/3,390.11
  6. Step 6: Final answer
    x = 2,619.24

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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.