Home / 10,115.02-15,171.78-3,875.60

Finding the Fourth Proportional to 10,115.02, 15,171.78 and 3,875.60

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Solution

The fourth proportional to 10,115.02, 15,171.78 and 3,875.60 is: 5,813.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.02 : 15,171.78 = 3,875.60 : x
  2. Step 2: Convert to fraction form
    10,115.02/15,171.78 = 3,875.60/x
  3. Step 3: Cross multiply
    10,115.02x = 15,171.78 × 3,875.60
  4. Step 4: Simplify right side
    10,115.02x = 58,799,750.57
  5. Step 5: Solve for x
    x = 58,799,750.57/10,115.02
  6. Step 6: Final answer
    x = 5,813.11

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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.