Home / 8,438.06-12,649.91-5,153.46

Finding the Fourth Proportional to 8,438.06, 12,649.91 and 5,153.46

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Solution

The fourth proportional to 8,438.06, 12,649.91 and 5,153.46 is: 7,725.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.06 : 12,649.91 = 5,153.46 : x
  2. Step 2: Convert to fraction form
    8,438.06/12,649.91 = 5,153.46/x
  3. Step 3: Cross multiply
    8,438.06x = 12,649.91 × 5,153.46
  4. Step 4: Simplify right side
    8,438.06x = 65,190,784.69
  5. Step 5: Solve for x
    x = 65,190,784.69/8,438.06
  6. Step 6: Final answer
    x = 7,725.80

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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.