Home / 8,060.10-11,148.21-7,128.60

Finding the Fourth Proportional to 8,060.10, 11,148.21 and 7,128.60

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Solution

The fourth proportional to 8,060.10, 11,148.21 and 7,128.60 is: 9,859.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,060.10 : 11,148.21 = 7,128.60 : x
  2. Step 2: Convert to fraction form
    8,060.10/11,148.21 = 7,128.60/x
  3. Step 3: Cross multiply
    8,060.10x = 11,148.21 × 7,128.60
  4. Step 4: Simplify right side
    8,060.10x = 79,471,129.81
  5. Step 5: Solve for x
    x = 79,471,129.81/8,060.10
  6. Step 6: Final answer
    x = 9,859.82

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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.