Home / 2,368.30-3,553.80-1,638.40

Finding the Fourth Proportional to 2,368.30, 3,553.80 and 1,638.40

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Solution

The fourth proportional to 2,368.30, 3,553.80 and 1,638.40 is: 2,458.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,368.30 : 3,553.80 = 1,638.40 : x
  2. Step 2: Convert to fraction form
    2,368.30/3,553.80 = 1,638.40/x
  3. Step 3: Cross multiply
    2,368.30x = 3,553.80 × 1,638.40
  4. Step 4: Simplify right side
    2,368.30x = 5,822,545.92
  5. Step 5: Solve for x
    x = 5,822,545.92/2,368.30
  6. Step 6: Final answer
    x = 2,458.53

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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.