Home / 3,127.19-4,315.66-1,729.94

Finding the Fourth Proportional to 3,127.19, 4,315.66 and 1,729.94

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Solution

The fourth proportional to 3,127.19, 4,315.66 and 1,729.94 is: 2,387.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.19 : 4,315.66 = 1,729.94 : x
  2. Step 2: Convert to fraction form
    3,127.19/4,315.66 = 1,729.94/x
  3. Step 3: Cross multiply
    3,127.19x = 4,315.66 × 1,729.94
  4. Step 4: Simplify right side
    3,127.19x = 7,465,813.42
  5. Step 5: Solve for x
    x = 7,465,813.42/3,127.19
  6. Step 6: Final answer
    x = 2,387.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.