Home / 5,112.71-7,053.24-3,122.89

Finding the Fourth Proportional to 5,112.71, 7,053.24 and 3,122.89

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Solution

The fourth proportional to 5,112.71, 7,053.24 and 3,122.89 is: 4,308.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.71 : 7,053.24 = 3,122.89 : x
  2. Step 2: Convert to fraction form
    5,112.71/7,053.24 = 3,122.89/x
  3. Step 3: Cross multiply
    5,112.71x = 7,053.24 × 3,122.89
  4. Step 4: Simplify right side
    5,112.71x = 22,026,492.66
  5. Step 5: Solve for x
    x = 22,026,492.66/5,112.71
  6. Step 6: Final answer
    x = 4,308.18

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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.