Home / 8,653.20-12,980.26-2,809.38

Finding the Fourth Proportional to 8,653.20, 12,980.26 and 2,809.38

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Solution

The fourth proportional to 8,653.20, 12,980.26 and 2,809.38 is: 4,214.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,653.20 : 12,980.26 = 2,809.38 : x
  2. Step 2: Convert to fraction form
    8,653.20/12,980.26 = 2,809.38/x
  3. Step 3: Cross multiply
    8,653.20x = 12,980.26 × 2,809.38
  4. Step 4: Simplify right side
    8,653.20x = 36,466,482.84
  5. Step 5: Solve for x
    x = 36,466,482.84/8,653.20
  6. Step 6: Final answer
    x = 4,214.22

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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.