Home / 8,128.50-11,222.58-7,276.26

Finding the Fourth Proportional to 8,128.50, 11,222.58 and 7,276.26

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Solution

The fourth proportional to 8,128.50, 11,222.58 and 7,276.26 is: 10,045.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.50 : 11,222.58 = 7,276.26 : x
  2. Step 2: Convert to fraction form
    8,128.50/11,222.58 = 7,276.26/x
  3. Step 3: Cross multiply
    8,128.50x = 11,222.58 × 7,276.26
  4. Step 4: Simplify right side
    8,128.50x = 81,658,323.24
  5. Step 5: Solve for x
    x = 81,658,323.24/8,128.50
  6. Step 6: Final answer
    x = 10,045.93

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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.