Home / 5,111.58-7,053.96-2,988.57

Finding the Fourth Proportional to 5,111.58, 7,053.96 and 2,988.57

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Solution

The fourth proportional to 5,111.58, 7,053.96 and 2,988.57 is: 4,124.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,111.58 : 7,053.96 = 2,988.57 : x
  2. Step 2: Convert to fraction form
    5,111.58/7,053.96 = 2,988.57/x
  3. Step 3: Cross multiply
    5,111.58x = 7,053.96 × 2,988.57
  4. Step 4: Simplify right side
    5,111.58x = 21,081,253.24
  5. Step 5: Solve for x
    x = 21,081,253.24/5,111.58
  6. Step 6: Final answer
    x = 4,124.21

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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.