Home / 4,687.80-7,031.78-1,400.94

Finding the Fourth Proportional to 4,687.80, 7,031.78 and 1,400.94

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Solution

The fourth proportional to 4,687.80, 7,031.78 and 1,400.94 is: 2,101.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,687.80 : 7,031.78 = 1,400.94 : x
  2. Step 2: Convert to fraction form
    4,687.80/7,031.78 = 1,400.94/x
  3. Step 3: Cross multiply
    4,687.80x = 7,031.78 × 1,400.94
  4. Step 4: Simplify right side
    4,687.80x = 9,851,101.87
  5. Step 5: Solve for x
    x = 9,851,101.87/4,687.80
  6. Step 6: Final answer
    x = 2,101.43

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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.