Home / 3,120.01-4,677.28-1,272.68

Finding the Fourth Proportional to 3,120.01, 4,677.28 and 1,272.68

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Solution

The fourth proportional to 3,120.01, 4,677.28 and 1,272.68 is: 1,907.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.01 : 4,677.28 = 1,272.68 : x
  2. Step 2: Convert to fraction form
    3,120.01/4,677.28 = 1,272.68/x
  3. Step 3: Cross multiply
    3,120.01x = 4,677.28 × 1,272.68
  4. Step 4: Simplify right side
    3,120.01x = 5,952,689.22
  5. Step 5: Solve for x
    x = 5,952,689.22/3,120.01
  6. Step 6: Final answer
    x = 1,907.91

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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.