Home / 3,125.54-4,689.86-1,277.12

Finding the Fourth Proportional to 3,125.54, 4,689.86 and 1,277.12

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Solution

The fourth proportional to 3,125.54, 4,689.86 and 1,277.12 is: 1,916.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.54 : 4,689.86 = 1,277.12 : x
  2. Step 2: Convert to fraction form
    3,125.54/4,689.86 = 1,277.12/x
  3. Step 3: Cross multiply
    3,125.54x = 4,689.86 × 1,277.12
  4. Step 4: Simplify right side
    3,125.54x = 5,989,484.17
  5. Step 5: Solve for x
    x = 5,989,484.17/3,125.54
  6. Step 6: Final answer
    x = 1,916.31

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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.