Home / 5,077.76-7,619.16-3,430.70

Finding the Fourth Proportional to 5,077.76, 7,619.16 and 3,430.70

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Solution

The fourth proportional to 5,077.76, 7,619.16 and 3,430.70 is: 5,147.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,077.76 : 7,619.16 = 3,430.70 : x
  2. Step 2: Convert to fraction form
    5,077.76/7,619.16 = 3,430.70/x
  3. Step 3: Cross multiply
    5,077.76x = 7,619.16 × 3,430.70
  4. Step 4: Simplify right side
    5,077.76x = 26,139,052.21
  5. Step 5: Solve for x
    x = 26,139,052.21/5,077.76
  6. Step 6: Final answer
    x = 5,147.75

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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.