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Finding the Fourth Proportional to 8,615.63, 11,889.26 and 5,264.05

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Solution

The fourth proportional to 8,615.63, 11,889.26 and 5,264.05 is: 7,264.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,615.63 : 11,889.26 = 5,264.05 : x
  2. Step 2: Convert to fraction form
    8,615.63/11,889.26 = 5,264.05/x
  3. Step 3: Cross multiply
    8,615.63x = 11,889.26 × 5,264.05
  4. Step 4: Simplify right side
    8,615.63x = 62,585,674.70
  5. Step 5: Solve for x
    x = 62,585,674.70/8,615.63
  6. Step 6: Final answer
    x = 7,264.20

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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.