Home / 3,119.76-4,325.78-3,015.68

Finding the Fourth Proportional to 3,119.76, 4,325.78 and 3,015.68

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Solution

The fourth proportional to 3,119.76, 4,325.78 and 3,015.68 is: 4,181.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.76 : 4,325.78 = 3,015.68 : x
  2. Step 2: Convert to fraction form
    3,119.76/4,325.78 = 3,015.68/x
  3. Step 3: Cross multiply
    3,119.76x = 4,325.78 × 3,015.68
  4. Step 4: Simplify right side
    3,119.76x = 13,045,154.14
  5. Step 5: Solve for x
    x = 13,045,154.14/3,119.76
  6. Step 6: Final answer
    x = 4,181.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.