Home / 2,985.86-4,120.42-1,726.90

Finding the Fourth Proportional to 2,985.86, 4,120.42 and 1,726.90

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Solution

The fourth proportional to 2,985.86, 4,120.42 and 1,726.90 is: 2,383.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.86 : 4,120.42 = 1,726.90 : x
  2. Step 2: Convert to fraction form
    2,985.86/4,120.42 = 1,726.90/x
  3. Step 3: Cross multiply
    2,985.86x = 4,120.42 × 1,726.90
  4. Step 4: Simplify right side
    2,985.86x = 7,115,553.30
  5. Step 5: Solve for x
    x = 7,115,553.30/2,985.86
  6. Step 6: Final answer
    x = 2,383.08

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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.