Home / 3,140.56-4,707.06-1,289.17

Finding the Fourth Proportional to 3,140.56, 4,707.06 and 1,289.17

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Solution

The fourth proportional to 3,140.56, 4,707.06 and 1,289.17 is: 1,932.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.56 : 4,707.06 = 1,289.17 : x
  2. Step 2: Convert to fraction form
    3,140.56/4,707.06 = 1,289.17/x
  3. Step 3: Cross multiply
    3,140.56x = 4,707.06 × 1,289.17
  4. Step 4: Simplify right side
    3,140.56x = 6,068,200.54
  5. Step 5: Solve for x
    x = 6,068,200.54/3,140.56
  6. Step 6: Final answer
    x = 1,932.20

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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.