Home / 3,390.19-4,678.65-1,898.10

Finding the Fourth Proportional to 3,390.19, 4,678.65 and 1,898.10

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Solution

The fourth proportional to 3,390.19, 4,678.65 and 1,898.10 is: 2,619.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.19 : 4,678.65 = 1,898.10 : x
  2. Step 2: Convert to fraction form
    3,390.19/4,678.65 = 1,898.10/x
  3. Step 3: Cross multiply
    3,390.19x = 4,678.65 × 1,898.10
  4. Step 4: Simplify right side
    3,390.19x = 8,880,545.57
  5. Step 5: Solve for x
    x = 8,880,545.57/3,390.19
  6. Step 6: Final answer
    x = 2,619.48

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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.