Home / 4,817.72-7,221.04-2,215.20

Finding the Fourth Proportional to 4,817.72, 7,221.04 and 2,215.20

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Solution

The fourth proportional to 4,817.72, 7,221.04 and 2,215.20 is: 3,320.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,817.72 : 7,221.04 = 2,215.20 : x
  2. Step 2: Convert to fraction form
    4,817.72/7,221.04 = 2,215.20/x
  3. Step 3: Cross multiply
    4,817.72x = 7,221.04 × 2,215.20
  4. Step 4: Simplify right side
    4,817.72x = 15,996,047.81
  5. Step 5: Solve for x
    x = 15,996,047.81/4,817.72
  6. Step 6: Final answer
    x = 3,320.25

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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.