Home / 8,940.30-13,396.74-4,780.89

Finding the Fourth Proportional to 8,940.30, 13,396.74 and 4,780.89

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Solution

The fourth proportional to 8,940.30, 13,396.74 and 4,780.89 is: 7,164.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,940.30 : 13,396.74 = 4,780.89 : x
  2. Step 2: Convert to fraction form
    8,940.30/13,396.74 = 4,780.89/x
  3. Step 3: Cross multiply
    8,940.30x = 13,396.74 × 4,780.89
  4. Step 4: Simplify right side
    8,940.30x = 64,048,340.30
  5. Step 5: Solve for x
    x = 64,048,340.30/8,940.30
  6. Step 6: Final answer
    x = 7,164.00

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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.