Home / 2,921.12-4,373.22-2,272.40

Finding the Fourth Proportional to 2,921.12, 4,373.22 and 2,272.40

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Solution

The fourth proportional to 2,921.12, 4,373.22 and 2,272.40 is: 3,402.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.12 : 4,373.22 = 2,272.40 : x
  2. Step 2: Convert to fraction form
    2,921.12/4,373.22 = 2,272.40/x
  3. Step 3: Cross multiply
    2,921.12x = 4,373.22 × 2,272.40
  4. Step 4: Simplify right side
    2,921.12x = 9,937,705.13
  5. Step 5: Solve for x
    x = 9,937,705.13/2,921.12
  6. Step 6: Final answer
    x = 3,402.02

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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.