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Finding the Fourth Proportional to 7,173.51, 9,898.79 and 4,029.09

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Solution

The fourth proportional to 7,173.51, 9,898.79 and 4,029.09 is: 5,559.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,173.51 : 9,898.79 = 4,029.09 : x
  2. Step 2: Convert to fraction form
    7,173.51/9,898.79 = 4,029.09/x
  3. Step 3: Cross multiply
    7,173.51x = 9,898.79 × 4,029.09
  4. Step 4: Simplify right side
    7,173.51x = 39,883,095.66
  5. Step 5: Solve for x
    x = 39,883,095.66/7,173.51
  6. Step 6: Final answer
    x = 5,559.77

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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.