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Finding the Fourth Proportional to 8,906.37, 12,290.80 and 4,927.76

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Solution

The fourth proportional to 8,906.37, 12,290.80 and 4,927.76 is: 6,800.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.37 : 12,290.80 = 4,927.76 : x
  2. Step 2: Convert to fraction form
    8,906.37/12,290.80 = 4,927.76/x
  3. Step 3: Cross multiply
    8,906.37x = 12,290.80 × 4,927.76
  4. Step 4: Simplify right side
    8,906.37x = 60,566,038.83
  5. Step 5: Solve for x
    x = 60,566,038.83/8,906.37
  6. Step 6: Final answer
    x = 6,800.31

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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.