Home / 2,688.35-4,030.68-1,369.55

Finding the Fourth Proportional to 2,688.35, 4,030.68 and 1,369.55

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Solution

The fourth proportional to 2,688.35, 4,030.68 and 1,369.55 is: 2,053.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.35 : 4,030.68 = 1,369.55 : x
  2. Step 2: Convert to fraction form
    2,688.35/4,030.68 = 1,369.55/x
  3. Step 3: Cross multiply
    2,688.35x = 4,030.68 × 1,369.55
  4. Step 4: Simplify right side
    2,688.35x = 5,520,202.63
  5. Step 5: Solve for x
    x = 5,520,202.63/2,688.35
  6. Step 6: Final answer
    x = 2,053.38

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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.