Home / 10,428.78-15,643.19-2,637.60

Finding the Fourth Proportional to 10,428.78, 15,643.19 and 2,637.60

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Solution

The fourth proportional to 10,428.78, 15,643.19 and 2,637.60 is: 3,956.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,428.78 : 15,643.19 = 2,637.60 : x
  2. Step 2: Convert to fraction form
    10,428.78/15,643.19 = 2,637.60/x
  3. Step 3: Cross multiply
    10,428.78x = 15,643.19 × 2,637.60
  4. Step 4: Simplify right side
    10,428.78x = 41,260,477.94
  5. Step 5: Solve for x
    x = 41,260,477.94/10,428.78
  6. Step 6: Final answer
    x = 3,956.41

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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.