Home / 3,739.42-5,612.51-1,985.68

Finding the Fourth Proportional to 3,739.42, 5,612.51 and 1,985.68

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Solution

The fourth proportional to 3,739.42, 5,612.51 and 1,985.68 is: 2,980.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,739.42 : 5,612.51 = 1,985.68 : x
  2. Step 2: Convert to fraction form
    3,739.42/5,612.51 = 1,985.68/x
  3. Step 3: Cross multiply
    3,739.42x = 5,612.51 × 1,985.68
  4. Step 4: Simplify right side
    3,739.42x = 11,144,648.86
  5. Step 5: Solve for x
    x = 11,144,648.86/3,739.42
  6. Step 6: Final answer
    x = 2,980.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.