Home / 7,128.24-10,682.95-5,160.45

Finding the Fourth Proportional to 7,128.24, 10,682.95 and 5,160.45

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Solution

The fourth proportional to 7,128.24, 10,682.95 and 5,160.45 is: 7,733.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.24 : 10,682.95 = 5,160.45 : x
  2. Step 2: Convert to fraction form
    7,128.24/10,682.95 = 5,160.45/x
  3. Step 3: Cross multiply
    7,128.24x = 10,682.95 × 5,160.45
  4. Step 4: Simplify right side
    7,128.24x = 55,128,829.33
  5. Step 5: Solve for x
    x = 55,128,829.33/7,128.24
  6. Step 6: Final answer
    x = 7,733.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.