Home / 1,272.92-1,907.35-1,077.10

Finding the Fourth Proportional to 1,272.92, 1,907.35 and 1,077.10

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Solution

The fourth proportional to 1,272.92, 1,907.35 and 1,077.10 is: 1,613.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272.92 : 1,907.35 = 1,077.10 : x
  2. Step 2: Convert to fraction form
    1,272.92/1,907.35 = 1,077.10/x
  3. Step 3: Cross multiply
    1,272.92x = 1,907.35 × 1,077.10
  4. Step 4: Simplify right side
    1,272.92x = 2,054,399.22
  5. Step 5: Solve for x
    x = 2,054,399.22/1,272.92
  6. Step 6: Final answer
    x = 1,613.93

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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.