Home / 8,489.34-12,715.56-5,192.46

Finding the Fourth Proportional to 8,489.34, 12,715.56 and 5,192.46

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Solution

The fourth proportional to 8,489.34, 12,715.56 and 5,192.46 is: 7,777.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,489.34 : 12,715.56 = 5,192.46 : x
  2. Step 2: Convert to fraction form
    8,489.34/12,715.56 = 5,192.46/x
  3. Step 3: Cross multiply
    8,489.34x = 12,715.56 × 5,192.46
  4. Step 4: Simplify right side
    8,489.34x = 66,025,036.68
  5. Step 5: Solve for x
    x = 66,025,036.68/8,489.34
  6. Step 6: Final answer
    x = 7,777.41

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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.