Home / 10,477.20-15,718.56-3,458.28

Finding the Fourth Proportional to 10,477.20, 15,718.56 and 3,458.28

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Solution

The fourth proportional to 10,477.20, 15,718.56 and 3,458.28 is: 5,188.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,477.20 : 15,718.56 = 3,458.28 : x
  2. Step 2: Convert to fraction form
    10,477.20/15,718.56 = 3,458.28/x
  3. Step 3: Cross multiply
    10,477.20x = 15,718.56 × 3,458.28
  4. Step 4: Simplify right side
    10,477.20x = 54,359,181.68
  5. Step 5: Solve for x
    x = 54,359,181.68/10,477.20
  6. Step 6: Final answer
    x = 5,188.33

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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.