Home / 3,403.79-4,696.53-1,911.57

Finding the Fourth Proportional to 3,403.79, 4,696.53 and 1,911.57

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Solution

The fourth proportional to 3,403.79, 4,696.53 and 1,911.57 is: 2,637.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,403.79 : 4,696.53 = 1,911.57 : x
  2. Step 2: Convert to fraction form
    3,403.79/4,696.53 = 1,911.57/x
  3. Step 3: Cross multiply
    3,403.79x = 4,696.53 × 1,911.57
  4. Step 4: Simplify right side
    3,403.79x = 8,977,745.85
  5. Step 5: Solve for x
    x = 8,977,745.85/3,403.79
  6. Step 6: Final answer
    x = 2,637.58

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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.