Home / 3,417.92-5,121.12-2,688.32

Finding the Fourth Proportional to 3,417.92, 5,121.12 and 2,688.32

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Solution

The fourth proportional to 3,417.92, 5,121.12 and 2,688.32 is: 4,027.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,417.92 : 5,121.12 = 2,688.32 : x
  2. Step 2: Convert to fraction form
    3,417.92/5,121.12 = 2,688.32/x
  3. Step 3: Cross multiply
    3,417.92x = 5,121.12 × 2,688.32
  4. Step 4: Simplify right side
    3,417.92x = 13,767,209.32
  5. Step 5: Solve for x
    x = 13,767,209.32/3,417.92
  6. Step 6: Final answer
    x = 4,027.95

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1.5x scale

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.