Home / 3,119.07-4,683.48-2,980.56

Finding the Fourth Proportional to 3,119.07, 4,683.48 and 2,980.56

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Solution

The fourth proportional to 3,119.07, 4,683.48 and 2,980.56 is: 4,475.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.07 : 4,683.48 = 2,980.56 : x
  2. Step 2: Convert to fraction form
    3,119.07/4,683.48 = 2,980.56/x
  3. Step 3: Cross multiply
    3,119.07x = 4,683.48 × 2,980.56
  4. Step 4: Simplify right side
    3,119.07x = 13,959,393.15
  5. Step 5: Solve for x
    x = 13,959,393.15/3,119.07
  6. Step 6: Final answer
    x = 4,475.50

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1.5x scale

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.