Home / 3,719.80-5,138.46-2,925.16

Finding the Fourth Proportional to 3,719.80, 5,138.46 and 2,925.16

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Solution

The fourth proportional to 3,719.80, 5,138.46 and 2,925.16 is: 4,040.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,719.80 : 5,138.46 = 2,925.16 : x
  2. Step 2: Convert to fraction form
    3,719.80/5,138.46 = 2,925.16/x
  3. Step 3: Cross multiply
    3,719.80x = 5,138.46 × 2,925.16
  4. Step 4: Simplify right side
    3,719.80x = 15,030,817.65
  5. Step 5: Solve for x
    x = 15,030,817.65/3,719.80
  6. Step 6: Final answer
    x = 4,040.76

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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.