Home / 3,368.08-5,053.20-1,288.72

Finding the Fourth Proportional to 3,368.08, 5,053.20 and 1,288.72

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Solution

The fourth proportional to 3,368.08, 5,053.20 and 1,288.72 is: 1,933.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,368.08 : 5,053.20 = 1,288.72 : x
  2. Step 2: Convert to fraction form
    3,368.08/5,053.20 = 1,288.72/x
  3. Step 3: Cross multiply
    3,368.08x = 5,053.20 × 1,288.72
  4. Step 4: Simplify right side
    3,368.08x = 6,512,159.90
  5. Step 5: Solve for x
    x = 6,512,159.90/3,368.08
  6. Step 6: Final answer
    x = 1,933.49

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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.