Home / 5,412.02-8,119.65-2,640.20

Finding the Fourth Proportional to 5,412.02, 8,119.65 and 2,640.20

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Solution

The fourth proportional to 5,412.02, 8,119.65 and 2,640.20 is: 3,961.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.02 : 8,119.65 = 2,640.20 : x
  2. Step 2: Convert to fraction form
    5,412.02/8,119.65 = 2,640.20/x
  3. Step 3: Cross multiply
    5,412.02x = 8,119.65 × 2,640.20
  4. Step 4: Simplify right side
    5,412.02x = 21,437,499.93
  5. Step 5: Solve for x
    x = 21,437,499.93/5,412.02
  6. Step 6: Final answer
    x = 3,961.09

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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.