Home / 3,700.65-5,106.44-2,128.85

Finding the Fourth Proportional to 3,700.65, 5,106.44 and 2,128.85

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Solution

The fourth proportional to 3,700.65, 5,106.44 and 2,128.85 is: 2,937.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,700.65 : 5,106.44 = 2,128.85 : x
  2. Step 2: Convert to fraction form
    3,700.65/5,106.44 = 2,128.85/x
  3. Step 3: Cross multiply
    3,700.65x = 5,106.44 × 2,128.85
  4. Step 4: Simplify right side
    3,700.65x = 10,870,808.62
  5. Step 5: Solve for x
    x = 10,870,808.62/3,700.65
  6. Step 6: Final answer
    x = 2,937.54

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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.