Home / 4,639.55-6,400.35-3,378.65

Finding the Fourth Proportional to 4,639.55, 6,400.35 and 3,378.65

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Solution

The fourth proportional to 4,639.55, 6,400.35 and 3,378.65 is: 4,660.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,639.55 : 6,400.35 = 3,378.65 : x
  2. Step 2: Convert to fraction form
    4,639.55/6,400.35 = 3,378.65/x
  3. Step 3: Cross multiply
    4,639.55x = 6,400.35 × 3,378.65
  4. Step 4: Simplify right side
    4,639.55x = 21,624,542.53
  5. Step 5: Solve for x
    x = 21,624,542.53/4,639.55
  6. Step 6: Final answer
    x = 4,660.91

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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.