Home / 3,015.86-4,161.62-1,689.34

Finding the Fourth Proportional to 3,015.86, 4,161.62 and 1,689.34

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Solution

The fourth proportional to 3,015.86, 4,161.62 and 1,689.34 is: 2,331.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,015.86 : 4,161.62 = 1,689.34 : x
  2. Step 2: Convert to fraction form
    3,015.86/4,161.62 = 1,689.34/x
  3. Step 3: Cross multiply
    3,015.86x = 4,161.62 × 1,689.34
  4. Step 4: Simplify right side
    3,015.86x = 7,030,391.13
  5. Step 5: Solve for x
    x = 7,030,391.13/3,015.86
  6. Step 6: Final answer
    x = 2,331.14

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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.