Home / 1,907.88-2,861.76-1,175.20

Finding the Fourth Proportional to 1,907.88, 2,861.76 and 1,175.20

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Solution

The fourth proportional to 1,907.88, 2,861.76 and 1,175.20 is: 1,762.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907.88 : 2,861.76 = 1,175.20 : x
  2. Step 2: Convert to fraction form
    1,907.88/2,861.76 = 1,175.20/x
  3. Step 3: Cross multiply
    1,907.88x = 2,861.76 × 1,175.20
  4. Step 4: Simplify right side
    1,907.88x = 3,363,140.35
  5. Step 5: Solve for x
    x = 3,363,140.35/1,907.88
  6. Step 6: Final answer
    x = 1,762.76

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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.