Home / 5,131.93-7,080.40-3,140.41

Finding the Fourth Proportional to 5,131.93, 7,080.40 and 3,140.41

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Solution

The fourth proportional to 5,131.93, 7,080.40 and 3,140.41 is: 4,332.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,131.93 : 7,080.40 = 3,140.41 : x
  2. Step 2: Convert to fraction form
    5,131.93/7,080.40 = 3,140.41/x
  3. Step 3: Cross multiply
    5,131.93x = 7,080.40 × 3,140.41
  4. Step 4: Simplify right side
    5,131.93x = 22,235,358.96
  5. Step 5: Solve for x
    x = 22,235,358.96/5,131.93
  6. Step 6: Final answer
    x = 4,332.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.