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Finding the Fourth Proportional to 9,980.65, 13,772.73 and 5,504.41

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Solution

The fourth proportional to 9,980.65, 13,772.73 and 5,504.41 is: 7,595.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,980.65 : 13,772.73 = 5,504.41 : x
  2. Step 2: Convert to fraction form
    9,980.65/13,772.73 = 5,504.41/x
  3. Step 3: Cross multiply
    9,980.65x = 13,772.73 × 5,504.41
  4. Step 4: Simplify right side
    9,980.65x = 75,810,752.74
  5. Step 5: Solve for x
    x = 75,810,752.74/9,980.65
  6. Step 6: Final answer
    x = 7,595.77

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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.