Home / 4,639.94-6,400.94-2,870.90

Finding the Fourth Proportional to 4,639.94, 6,400.94 and 2,870.90

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Solution

The fourth proportional to 4,639.94, 6,400.94 and 2,870.90 is: 3,960.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,639.94 : 6,400.94 = 2,870.90 : x
  2. Step 2: Convert to fraction form
    4,639.94/6,400.94 = 2,870.90/x
  3. Step 3: Cross multiply
    4,639.94x = 6,400.94 × 2,870.90
  4. Step 4: Simplify right side
    4,639.94x = 18,376,458.65
  5. Step 5: Solve for x
    x = 18,376,458.65/4,639.94
  6. Step 6: Final answer
    x = 3,960.49

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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.