Home / 5,785.10-7,981.28-3,796.76

Finding the Fourth Proportional to 5,785.10, 7,981.28 and 3,796.76

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Solution

The fourth proportional to 5,785.10, 7,981.28 and 3,796.76 is: 5,238.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,785.10 : 7,981.28 = 3,796.76 : x
  2. Step 2: Convert to fraction form
    5,785.10/7,981.28 = 3,796.76/x
  3. Step 3: Cross multiply
    5,785.10x = 7,981.28 × 3,796.76
  4. Step 4: Simplify right side
    5,785.10x = 30,303,004.65
  5. Step 5: Solve for x
    x = 30,303,004.65/5,785.10
  6. Step 6: Final answer
    x = 5,238.11

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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.