Home / 7,128.24-9,836.76-3,941.76

Finding the Fourth Proportional to 7,128.24, 9,836.76 and 3,941.76

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Solution

The fourth proportional to 7,128.24, 9,836.76 and 3,941.76 is: 5,439.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.24 : 9,836.76 = 3,941.76 : x
  2. Step 2: Convert to fraction form
    7,128.24/9,836.76 = 3,941.76/x
  3. Step 3: Cross multiply
    7,128.24x = 9,836.76 × 3,941.76
  4. Step 4: Simplify right side
    7,128.24x = 38,774,147.10
  5. Step 5: Solve for x
    x = 38,774,147.10/7,128.24
  6. Step 6: Final answer
    x = 5,439.51

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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.