Home / 2,985.86-4,120.78-1,726.52

Finding the Fourth Proportional to 2,985.86, 4,120.78 and 1,726.52

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Solution

The fourth proportional to 2,985.86, 4,120.78 and 1,726.52 is: 2,382.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.86 : 4,120.78 = 1,726.52 : x
  2. Step 2: Convert to fraction form
    2,985.86/4,120.78 = 1,726.52/x
  3. Step 3: Cross multiply
    2,985.86x = 4,120.78 × 1,726.52
  4. Step 4: Simplify right side
    2,985.86x = 7,114,609.09
  5. Step 5: Solve for x
    x = 7,114,609.09/2,985.86
  6. Step 6: Final answer
    x = 2,382.77

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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.