Home / 8,996.91-12,415.77-5,220.81

Finding the Fourth Proportional to 8,996.91, 12,415.77 and 5,220.81

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Solution

The fourth proportional to 8,996.91, 12,415.77 and 5,220.81 is: 7,204.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,996.91 : 12,415.77 = 5,220.81 : x
  2. Step 2: Convert to fraction form
    8,996.91/12,415.77 = 5,220.81/x
  3. Step 3: Cross multiply
    8,996.91x = 12,415.77 × 5,220.81
  4. Step 4: Simplify right side
    8,996.91x = 64,820,376.17
  5. Step 5: Solve for x
    x = 64,820,376.17/8,996.91
  6. Step 6: Final answer
    x = 7,204.74

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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.