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Finding the Fourth Proportional to 8,622.77, 11,899.05 and 5,271.17

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Solution

The fourth proportional to 8,622.77, 11,899.05 and 5,271.17 is: 7,273.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,622.77 : 11,899.05 = 5,271.17 : x
  2. Step 2: Convert to fraction form
    8,622.77/11,899.05 = 5,271.17/x
  3. Step 3: Cross multiply
    8,622.77x = 11,899.05 × 5,271.17
  4. Step 4: Simplify right side
    8,622.77x = 62,721,915.39
  5. Step 5: Solve for x
    x = 62,721,915.39/8,622.77
  6. Step 6: Final answer
    x = 7,273.99

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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.