Home / 3,670.90-5,506.35-2,115.70

Finding the Fourth Proportional to 3,670.90, 5,506.35 and 2,115.70

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Solution

The fourth proportional to 3,670.90, 5,506.35 and 2,115.70 is: 3,173.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,670.90 : 5,506.35 = 2,115.70 : x
  2. Step 2: Convert to fraction form
    3,670.90/5,506.35 = 2,115.70/x
  3. Step 3: Cross multiply
    3,670.90x = 5,506.35 × 2,115.70
  4. Step 4: Simplify right side
    3,670.90x = 11,649,784.70
  5. Step 5: Solve for x
    x = 11,649,784.70/3,670.90
  6. Step 6: Final answer
    x = 3,173.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.