Home / 2,885.76-3,982.56-1,627.20

Finding the Fourth Proportional to 2,885.76, 3,982.56 and 1,627.20

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Solution

The fourth proportional to 2,885.76, 3,982.56 and 1,627.20 is: 2,245.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,885.76 : 3,982.56 = 1,627.20 : x
  2. Step 2: Convert to fraction form
    2,885.76/3,982.56 = 1,627.20/x
  3. Step 3: Cross multiply
    2,885.76x = 3,982.56 × 1,627.20
  4. Step 4: Simplify right side
    2,885.76x = 6,480,421.63
  5. Step 5: Solve for x
    x = 6,480,421.63/2,885.76
  6. Step 6: Final answer
    x = 2,245.66

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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.