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Finding the Fourth Proportional to 8,709.61, 13,064.38 and 2,866.22

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Solution

The fourth proportional to 8,709.61, 13,064.38 and 2,866.22 is: 4,299.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,709.61 : 13,064.38 = 2,866.22 : x
  2. Step 2: Convert to fraction form
    8,709.61/13,064.38 = 2,866.22/x
  3. Step 3: Cross multiply
    8,709.61x = 13,064.38 × 2,866.22
  4. Step 4: Simplify right side
    8,709.61x = 37,445,387.24
  5. Step 5: Solve for x
    x = 37,445,387.24/8,709.61
  6. Step 6: Final answer
    x = 4,299.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.