Home / 5,130.69-7,689.96-2,355.03

Finding the Fourth Proportional to 5,130.69, 7,689.96 and 2,355.03

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Solution

The fourth proportional to 5,130.69, 7,689.96 and 2,355.03 is: 3,529.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.69 : 7,689.96 = 2,355.03 : x
  2. Step 2: Convert to fraction form
    5,130.69/7,689.96 = 2,355.03/x
  3. Step 3: Cross multiply
    5,130.69x = 7,689.96 × 2,355.03
  4. Step 4: Simplify right side
    5,130.69x = 18,110,086.50
  5. Step 5: Solve for x
    x = 18,110,086.50/5,130.69
  6. Step 6: Final answer
    x = 3,529.76

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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.