Home / 5,639.64-7,785.36-3,280.92

Finding the Fourth Proportional to 5,639.64, 7,785.36 and 3,280.92

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Solution

The fourth proportional to 5,639.64, 7,785.36 and 3,280.92 is: 4,529.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.64 : 7,785.36 = 3,280.92 : x
  2. Step 2: Convert to fraction form
    5,639.64/7,785.36 = 3,280.92/x
  3. Step 3: Cross multiply
    5,639.64x = 7,785.36 × 3,280.92
  4. Step 4: Simplify right side
    5,639.64x = 25,543,143.33
  5. Step 5: Solve for x
    x = 25,543,143.33/5,639.64
  6. Step 6: Final answer
    x = 4,529.22

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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.