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Finding the Fourth Proportional to 9,888.32, 13,641.54 and 5,907.44

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Solution

The fourth proportional to 9,888.32, 13,641.54 and 5,907.44 is: 8,149.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,888.32 : 13,641.54 = 5,907.44 : x
  2. Step 2: Convert to fraction form
    9,888.32/13,641.54 = 5,907.44/x
  3. Step 3: Cross multiply
    9,888.32x = 13,641.54 × 5,907.44
  4. Step 4: Simplify right side
    9,888.32x = 80,586,579.06
  5. Step 5: Solve for x
    x = 80,586,579.06/9,888.32
  6. Step 6: Final answer
    x = 8,149.67

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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.