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Finding the Fourth Proportional to 9,907.02, 13,669.20 and 6,374.88

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Solution

The fourth proportional to 9,907.02, 13,669.20 and 6,374.88 is: 8,795.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,907.02 : 13,669.20 = 6,374.88 : x
  2. Step 2: Convert to fraction form
    9,907.02/13,669.20 = 6,374.88/x
  3. Step 3: Cross multiply
    9,907.02x = 13,669.20 × 6,374.88
  4. Step 4: Simplify right side
    9,907.02x = 87,139,509.70
  5. Step 5: Solve for x
    x = 87,139,509.70/9,907.02
  6. Step 6: Final answer
    x = 8,795.73

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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.