Home / 3,119.10-4,678.86-1,039.02

Finding the Fourth Proportional to 3,119.10, 4,678.86 and 1,039.02

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Solution

The fourth proportional to 3,119.10, 4,678.86 and 1,039.02 is: 1,558.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.10 : 4,678.86 = 1,039.02 : x
  2. Step 2: Convert to fraction form
    3,119.10/4,678.86 = 1,039.02/x
  3. Step 3: Cross multiply
    3,119.10x = 4,678.86 × 1,039.02
  4. Step 4: Simplify right side
    3,119.10x = 4,861,429.12
  5. Step 5: Solve for x
    x = 4,861,429.12/3,119.10
  6. Step 6: Final answer
    x = 1,558.60

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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.