Home / 3,403.67-4,697.13-1,911.72

Finding the Fourth Proportional to 3,403.67, 4,697.13 and 1,911.72

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Solution

The fourth proportional to 3,403.67, 4,697.13 and 1,911.72 is: 2,638.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,403.67 : 4,697.13 = 1,911.72 : x
  2. Step 2: Convert to fraction form
    3,403.67/4,697.13 = 1,911.72/x
  3. Step 3: Cross multiply
    3,403.67x = 4,697.13 × 1,911.72
  4. Step 4: Simplify right side
    3,403.67x = 8,979,597.36
  5. Step 5: Solve for x
    x = 8,979,597.36/3,403.67
  6. Step 6: Final answer
    x = 2,638.21

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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.