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Finding the Fourth Proportional to 7,347.76, 11,021.64 and 2,153.64

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Solution

The fourth proportional to 7,347.76, 11,021.64 and 2,153.64 is: 3,230.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,347.76 : 11,021.64 = 2,153.64 : x
  2. Step 2: Convert to fraction form
    7,347.76/11,021.64 = 2,153.64/x
  3. Step 3: Cross multiply
    7,347.76x = 11,021.64 × 2,153.64
  4. Step 4: Simplify right side
    7,347.76x = 23,736,644.77
  5. Step 5: Solve for x
    x = 23,736,644.77/7,347.76
  6. Step 6: Final answer
    x = 3,230.46

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1.5x scale

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.