Home / 3,129.09-4,317.62-1,870.66

Finding the Fourth Proportional to 3,129.09, 4,317.62 and 1,870.66

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Solution

The fourth proportional to 3,129.09, 4,317.62 and 1,870.66 is: 2,581.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.09 : 4,317.62 = 1,870.66 : x
  2. Step 2: Convert to fraction form
    3,129.09/4,317.62 = 1,870.66/x
  3. Step 3: Cross multiply
    3,129.09x = 4,317.62 × 1,870.66
  4. Step 4: Simplify right side
    3,129.09x = 8,076,777.44
  5. Step 5: Solve for x
    x = 8,076,777.44/3,129.09
  6. Step 6: Final answer
    x = 2,581.19

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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.