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Finding the Fourth Proportional to 8,391.54, 12,637.26 and 7,308.98

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Solution

The fourth proportional to 8,391.54, 12,637.26 and 7,308.98 is: 11,006.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.54 : 12,637.26 = 7,308.98 : x
  2. Step 2: Convert to fraction form
    8,391.54/12,637.26 = 7,308.98/x
  3. Step 3: Cross multiply
    8,391.54x = 12,637.26 × 7,308.98
  4. Step 4: Simplify right side
    8,391.54x = 92,365,417.41
  5. Step 5: Solve for x
    x = 92,365,417.41/8,391.54
  6. Step 6: Final answer
    x = 11,006.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.