Home / 2,622.72-3,615.36-1,781.76

Finding the Fourth Proportional to 2,622.72, 3,615.36 and 1,781.76

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Solution

The fourth proportional to 2,622.72, 3,615.36 and 1,781.76 is: 2,456.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,622.72 : 3,615.36 = 1,781.76 : x
  2. Step 2: Convert to fraction form
    2,622.72/3,615.36 = 1,781.76/x
  3. Step 3: Cross multiply
    2,622.72x = 3,615.36 × 1,781.76
  4. Step 4: Simplify right side
    2,622.72x = 6,441,703.83
  5. Step 5: Solve for x
    x = 6,441,703.83/2,622.72
  6. Step 6: Final answer
    x = 2,456.12

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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.