Home / 5,190.16-7,785.16-2,415.28

Finding the Fourth Proportional to 5,190.16, 7,785.16 and 2,415.28

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Solution

The fourth proportional to 5,190.16, 7,785.16 and 2,415.28 is: 3,622.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.16 : 7,785.16 = 2,415.28 : x
  2. Step 2: Convert to fraction form
    5,190.16/7,785.16 = 2,415.28/x
  3. Step 3: Cross multiply
    5,190.16x = 7,785.16 × 2,415.28
  4. Step 4: Simplify right side
    5,190.16x = 18,803,329.17
  5. Step 5: Solve for x
    x = 18,803,329.17/5,190.16
  6. Step 6: Final answer
    x = 3,622.88

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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.