Home / 3,403.87-4,697.18-1,911.76

Finding the Fourth Proportional to 3,403.87, 4,697.18 and 1,911.76

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Solution

The fourth proportional to 3,403.87, 4,697.18 and 1,911.76 is: 2,638.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,403.87 : 4,697.18 = 1,911.76 : x
  2. Step 2: Convert to fraction form
    3,403.87/4,697.18 = 1,911.76/x
  3. Step 3: Cross multiply
    3,403.87x = 4,697.18 × 1,911.76
  4. Step 4: Simplify right side
    3,403.87x = 8,979,880.84
  5. Step 5: Solve for x
    x = 8,979,880.84/3,403.87
  6. Step 6: Final answer
    x = 2,638.14

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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.