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Finding the Fourth Proportional to 7,353.72, 11,031.39 and 2,160

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Solution

The fourth proportional to 7,353.72, 11,031.39 and 2,160 is: 3,240.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,353.72 : 11,031.39 = 2,160 : x
  2. Step 2: Convert to fraction form
    7,353.72/11,031.39 = 2,160/x
  3. Step 3: Cross multiply
    7,353.72x = 11,031.39 × 2,160
  4. Step 4: Simplify right side
    7,353.72x = 23,827,802.40
  5. Step 5: Solve for x
    x = 23,827,802.40/7,353.72
  6. Step 6: Final answer
    x = 3,240.24

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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.