Home / 3,139.53-4,707.87-1,190.35

Finding the Fourth Proportional to 3,139.53, 4,707.87 and 1,190.35

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Solution

The fourth proportional to 3,139.53, 4,707.87 and 1,190.35 is: 1,784.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.53 : 4,707.87 = 1,190.35 : x
  2. Step 2: Convert to fraction form
    3,139.53/4,707.87 = 1,190.35/x
  3. Step 3: Cross multiply
    3,139.53x = 4,707.87 × 1,190.35
  4. Step 4: Simplify right side
    3,139.53x = 5,604,013.05
  5. Step 5: Solve for x
    x = 5,604,013.05/3,139.53
  6. Step 6: Final answer
    x = 1,784.98

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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.