Home / 10,378.05-15,564.78-2,980.86

Finding the Fourth Proportional to 10,378.05, 15,564.78 and 2,980.86

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Solution

The fourth proportional to 10,378.05, 15,564.78 and 2,980.86 is: 4,470.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,378.05 : 15,564.78 = 2,980.86 : x
  2. Step 2: Convert to fraction form
    10,378.05/15,564.78 = 2,980.86/x
  3. Step 3: Cross multiply
    10,378.05x = 15,564.78 × 2,980.86
  4. Step 4: Simplify right side
    10,378.05x = 46,396,430.11
  5. Step 5: Solve for x
    x = 46,396,430.11/10,378.05
  6. Step 6: Final answer
    x = 4,470.63

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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.