Home / 2,750.69-4,128.08-1,712.21

Finding the Fourth Proportional to 2,750.69, 4,128.08 and 1,712.21

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Solution

The fourth proportional to 2,750.69, 4,128.08 and 1,712.21 is: 2,569.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,750.69 : 4,128.08 = 1,712.21 : x
  2. Step 2: Convert to fraction form
    2,750.69/4,128.08 = 1,712.21/x
  3. Step 3: Cross multiply
    2,750.69x = 4,128.08 × 1,712.21
  4. Step 4: Simplify right side
    2,750.69x = 7,068,110.66
  5. Step 5: Solve for x
    x = 7,068,110.66/2,750.69
  6. Step 6: Final answer
    x = 2,569.58

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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.