Home / 2,985.38-4,120.32-1,726.22

Finding the Fourth Proportional to 2,985.38, 4,120.32 and 1,726.22

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Solution

The fourth proportional to 2,985.38, 4,120.32 and 1,726.22 is: 2,382.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.38 : 4,120.32 = 1,726.22 : x
  2. Step 2: Convert to fraction form
    2,985.38/4,120.32 = 1,726.22/x
  3. Step 3: Cross multiply
    2,985.38x = 4,120.32 × 1,726.22
  4. Step 4: Simplify right side
    2,985.38x = 7,112,578.79
  5. Step 5: Solve for x
    x = 7,112,578.79/2,985.38
  6. Step 6: Final answer
    x = 2,382.47

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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.