Home / 7,186.09-9,916.80-4,042.28

Finding the Fourth Proportional to 7,186.09, 9,916.80 and 4,042.28

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Solution

The fourth proportional to 7,186.09, 9,916.80 and 4,042.28 is: 5,578.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,186.09 : 9,916.80 = 4,042.28 : x
  2. Step 2: Convert to fraction form
    7,186.09/9,916.80 = 4,042.28/x
  3. Step 3: Cross multiply
    7,186.09x = 9,916.80 × 4,042.28
  4. Step 4: Simplify right side
    7,186.09x = 40,086,432.72
  5. Step 5: Solve for x
    x = 40,086,432.72/7,186.09
  6. Step 6: Final answer
    x = 5,578.34

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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.