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Finding the Fourth Proportional to 8,406.90, 11,601.41 and 4,870.44

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Solution

The fourth proportional to 8,406.90, 11,601.41 and 4,870.44 is: 6,721.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,406.90 : 11,601.41 = 4,870.44 : x
  2. Step 2: Convert to fraction form
    8,406.90/11,601.41 = 4,870.44/x
  3. Step 3: Cross multiply
    8,406.90x = 11,601.41 × 4,870.44
  4. Step 4: Simplify right side
    8,406.90x = 56,503,888.96
  5. Step 5: Solve for x
    x = 56,503,888.96/8,406.90
  6. Step 6: Final answer
    x = 6,721.14

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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.