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Finding the Fourth Proportional to 8,615.00, 11,886.50 and 5,257.59

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Solution

The fourth proportional to 8,615.00, 11,886.50 and 5,257.59 is: 7,254.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,615.00 : 11,886.50 = 5,257.59 : x
  2. Step 2: Convert to fraction form
    8,615.00/11,886.50 = 5,257.59/x
  3. Step 3: Cross multiply
    8,615.00x = 11,886.50 × 5,257.59
  4. Step 4: Simplify right side
    8,615.00x = 62,494,317.25
  5. Step 5: Solve for x
    x = 62,494,317.25/8,615.00
  6. Step 6: Final answer
    x = 7,254.13

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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.