Home / 8,418.42-12,623.45-4,909.64

Finding the Fourth Proportional to 8,418.42, 12,623.45 and 4,909.64

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Solution

The fourth proportional to 8,418.42, 12,623.45 and 4,909.64 is: 7,362.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.42 : 12,623.45 = 4,909.64 : x
  2. Step 2: Convert to fraction form
    8,418.42/12,623.45 = 4,909.64/x
  3. Step 3: Cross multiply
    8,418.42x = 12,623.45 × 4,909.64
  4. Step 4: Simplify right side
    8,418.42x = 61,976,507.39
  5. Step 5: Solve for x
    x = 61,976,507.39/8,418.42
  6. Step 6: Final answer
    x = 7,362.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.