Home / 8,145.45-11,242.95-7,591.41

Finding the Fourth Proportional to 8,145.45, 11,242.95 and 7,591.41

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Solution

The fourth proportional to 8,145.45, 11,242.95 and 7,591.41 is: 10,478.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,145.45 : 11,242.95 = 7,591.41 : x
  2. Step 2: Convert to fraction form
    8,145.45/11,242.95 = 7,591.41/x
  3. Step 3: Cross multiply
    8,145.45x = 11,242.95 × 7,591.41
  4. Step 4: Simplify right side
    8,145.45x = 85,349,843.06
  5. Step 5: Solve for x
    x = 85,349,843.06/8,145.45
  6. Step 6: Final answer
    x = 10,478.22

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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.