Home / 4,130.53-5,695.72-3,121.81

Finding the Fourth Proportional to 4,130.53, 5,695.72 and 3,121.81

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Solution

The fourth proportional to 4,130.53, 5,695.72 and 3,121.81 is: 4,304.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,130.53 : 5,695.72 = 3,121.81 : x
  2. Step 2: Convert to fraction form
    4,130.53/5,695.72 = 3,121.81/x
  3. Step 3: Cross multiply
    4,130.53x = 5,695.72 × 3,121.81
  4. Step 4: Simplify right side
    4,130.53x = 17,780,955.65
  5. Step 5: Solve for x
    x = 17,780,955.65/4,130.53
  6. Step 6: Final answer
    x = 4,304.76

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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.