Home / 8,756.03-12,087.21-5,220.47

Finding the Fourth Proportional to 8,756.03, 12,087.21 and 5,220.47

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Solution

The fourth proportional to 8,756.03, 12,087.21 and 5,220.47 is: 7,206.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,756.03 : 12,087.21 = 5,220.47 : x
  2. Step 2: Convert to fraction form
    8,756.03/12,087.21 = 5,220.47/x
  3. Step 3: Cross multiply
    8,756.03x = 12,087.21 × 5,220.47
  4. Step 4: Simplify right side
    8,756.03x = 63,100,856.75
  5. Step 5: Solve for x
    x = 63,100,856.75/8,756.03
  6. Step 6: Final answer
    x = 7,206.56

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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.