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Finding the Fourth Proportional to 9,888.48, 13,640.40 and 5,908.32

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Solution

The fourth proportional to 9,888.48, 13,640.40 and 5,908.32 is: 8,150.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,888.48 : 13,640.40 = 5,908.32 : x
  2. Step 2: Convert to fraction form
    9,888.48/13,640.40 = 5,908.32/x
  3. Step 3: Cross multiply
    9,888.48x = 13,640.40 × 5,908.32
  4. Step 4: Simplify right side
    9,888.48x = 80,591,848.13
  5. Step 5: Solve for x
    x = 80,591,848.13/9,888.48
  6. Step 6: Final answer
    x = 8,150.07

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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.