Home / 7,820.68-11,731.38-4,355.32

Finding the Fourth Proportional to 7,820.68, 11,731.38 and 4,355.32

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Solution

The fourth proportional to 7,820.68, 11,731.38 and 4,355.32 is: 6,533.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,820.68 : 11,731.38 = 4,355.32 : x
  2. Step 2: Convert to fraction form
    7,820.68/11,731.38 = 4,355.32/x
  3. Step 3: Cross multiply
    7,820.68x = 11,731.38 × 4,355.32
  4. Step 4: Simplify right side
    7,820.68x = 51,093,913.94
  5. Step 5: Solve for x
    x = 51,093,913.94/7,820.68
  6. Step 6: Final answer
    x = 6,533.18

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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.