Home / 8,997.47-12,415.30-5,220.37

Finding the Fourth Proportional to 8,997.47, 12,415.30 and 5,220.37

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Solution

The fourth proportional to 8,997.47, 12,415.30 and 5,220.37 is: 7,203.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,997.47 : 12,415.30 = 5,220.37 : x
  2. Step 2: Convert to fraction form
    8,997.47/12,415.30 = 5,220.37/x
  3. Step 3: Cross multiply
    8,997.47x = 12,415.30 × 5,220.37
  4. Step 4: Simplify right side
    8,997.47x = 64,812,459.66
  5. Step 5: Solve for x
    x = 64,812,459.66/8,997.47
  6. Step 6: Final answer
    x = 7,203.41

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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.