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Finding the Fourth Proportional to 9,903.44, 13,665.84 and 5,710.88

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Solution

The fourth proportional to 9,903.44, 13,665.84 and 5,710.88 is: 7,880.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,903.44 : 13,665.84 = 5,710.88 : x
  2. Step 2: Convert to fraction form
    9,903.44/13,665.84 = 5,710.88/x
  3. Step 3: Cross multiply
    9,903.44x = 13,665.84 × 5,710.88
  4. Step 4: Simplify right side
    9,903.44x = 78,043,972.34
  5. Step 5: Solve for x
    x = 78,043,972.34/9,903.44
  6. Step 6: Final answer
    x = 7,880.49

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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.