Home / 3,613.65-4,987.67-2,122.05

Finding the Fourth Proportional to 3,613.65, 4,987.67 and 2,122.05

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Solution

The fourth proportional to 3,613.65, 4,987.67 and 2,122.05 is: 2,928.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.65 : 4,987.67 = 2,122.05 : x
  2. Step 2: Convert to fraction form
    3,613.65/4,987.67 = 2,122.05/x
  3. Step 3: Cross multiply
    3,613.65x = 4,987.67 × 2,122.05
  4. Step 4: Simplify right side
    3,613.65x = 10,584,085.12
  5. Step 5: Solve for x
    x = 10,584,085.12/3,613.65
  6. Step 6: Final answer
    x = 2,928.92

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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.