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Finding the Fourth Proportional to 3,393.32, 5,090 and 928.16

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Solution

The fourth proportional to 3,393.32, 5,090 and 928.16 is: 1,392.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,393.32 : 5,090 = 928.16 : x
  2. Step 2: Convert to fraction form
    3,393.32/5,090 = 928.16/x
  3. Step 3: Cross multiply
    3,393.32x = 5,090 × 928.16
  4. Step 4: Simplify right side
    3,393.32x = 4,724,334.40
  5. Step 5: Solve for x
    x = 4,724,334.40/3,393.32
  6. Step 6: Final answer
    x = 1,392.25

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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.