Home / 3,478.80-4,800.84-2,153.16

Finding the Fourth Proportional to 3,478.80, 4,800.84 and 2,153.16

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Solution

The fourth proportional to 3,478.80, 4,800.84 and 2,153.16 is: 2,971.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.80 : 4,800.84 = 2,153.16 : x
  2. Step 2: Convert to fraction form
    3,478.80/4,800.84 = 2,153.16/x
  3. Step 3: Cross multiply
    3,478.80x = 4,800.84 × 2,153.16
  4. Step 4: Simplify right side
    3,478.80x = 10,336,976.65
  5. Step 5: Solve for x
    x = 10,336,976.65/3,478.80
  6. Step 6: Final answer
    x = 2,971.42

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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.