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Finding the Fourth Proportional to 8,615.94, 11,889 and 4,838.34

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Solution

The fourth proportional to 8,615.94, 11,889 and 4,838.34 is: 6,676.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,615.94 : 11,889 = 4,838.34 : x
  2. Step 2: Convert to fraction form
    8,615.94/11,889 = 4,838.34/x
  3. Step 3: Cross multiply
    8,615.94x = 11,889 × 4,838.34
  4. Step 4: Simplify right side
    8,615.94x = 57,523,024.26
  5. Step 5: Solve for x
    x = 57,523,024.26/8,615.94
  6. Step 6: Final answer
    x = 6,676.35

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Double scale
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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.