Home / 7,146.63-10,720.25-2,219.60

Finding the Fourth Proportional to 7,146.63, 10,720.25 and 2,219.60

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Solution

The fourth proportional to 7,146.63, 10,720.25 and 2,219.60 is: 3,329.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,146.63 : 10,720.25 = 2,219.60 : x
  2. Step 2: Convert to fraction form
    7,146.63/10,720.25 = 2,219.60/x
  3. Step 3: Cross multiply
    7,146.63x = 10,720.25 × 2,219.60
  4. Step 4: Simplify right side
    7,146.63x = 23,794,690.93
  5. Step 5: Solve for x
    x = 23,794,690.93/7,146.63
  6. Step 6: Final answer
    x = 3,329.50

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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.