Home / 5,128.29-7,077.05-2,770.44

Finding the Fourth Proportional to 5,128.29, 7,077.05 and 2,770.44

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Solution

The fourth proportional to 5,128.29, 7,077.05 and 2,770.44 is: 3,823.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.29 : 7,077.05 = 2,770.44 : x
  2. Step 2: Convert to fraction form
    5,128.29/7,077.05 = 2,770.44/x
  3. Step 3: Cross multiply
    5,128.29x = 7,077.05 × 2,770.44
  4. Step 4: Simplify right side
    5,128.29x = 19,606,513.94
  5. Step 5: Solve for x
    x = 19,606,513.94/5,128.29
  6. Step 6: Final answer
    x = 3,823.20

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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.