Home / 3,127.15-4,689.21-1,277.53

Finding the Fourth Proportional to 3,127.15, 4,689.21 and 1,277.53

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Solution

The fourth proportional to 3,127.15, 4,689.21 and 1,277.53 is: 1,915.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.15 : 4,689.21 = 1,277.53 : x
  2. Step 2: Convert to fraction form
    3,127.15/4,689.21 = 1,277.53/x
  3. Step 3: Cross multiply
    3,127.15x = 4,689.21 × 1,277.53
  4. Step 4: Simplify right side
    3,127.15x = 5,990,606.45
  5. Step 5: Solve for x
    x = 5,990,606.45/3,127.15
  6. Step 6: Final answer
    x = 1,915.68

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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.