Home / 2,620.19-3,621.02-2,147.30

Finding the Fourth Proportional to 2,620.19, 3,621.02 and 2,147.30

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Solution

The fourth proportional to 2,620.19, 3,621.02 and 2,147.30 is: 2,967.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.19 : 3,621.02 = 2,147.30 : x
  2. Step 2: Convert to fraction form
    2,620.19/3,621.02 = 2,147.30/x
  3. Step 3: Cross multiply
    2,620.19x = 3,621.02 × 2,147.30
  4. Step 4: Simplify right side
    2,620.19x = 7,775,416.25
  5. Step 5: Solve for x
    x = 7,775,416.25/2,620.19
  6. Step 6: Final answer
    x = 2,967.50

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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.