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Finding the Fourth Proportional to 7,212, 9,954.39 and 4,070.01

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Solution

The fourth proportional to 7,212, 9,954.39 and 4,070.01 is: 5,617.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212 : 9,954.39 = 4,070.01 : x
  2. Step 2: Convert to fraction form
    7,212/9,954.39 = 4,070.01/x
  3. Step 3: Cross multiply
    7,212x = 9,954.39 × 4,070.01
  4. Step 4: Simplify right side
    7,212x = 40,514,466.84
  5. Step 5: Solve for x
    x = 40,514,466.84/7,212
  6. Step 6: Final answer
    x = 5,617.65

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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.