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Finding the Fourth Proportional to 8,905.78, 13,346.28 and 7,364.32

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Solution

The fourth proportional to 8,905.78, 13,346.28 and 7,364.32 is: 11,036.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,905.78 : 13,346.28 = 7,364.32 : x
  2. Step 2: Convert to fraction form
    8,905.78/13,346.28 = 7,364.32/x
  3. Step 3: Cross multiply
    8,905.78x = 13,346.28 × 7,364.32
  4. Step 4: Simplify right side
    8,905.78x = 98,286,295.14
  5. Step 5: Solve for x
    x = 98,286,295.14/8,905.78
  6. Step 6: Final answer
    x = 11,036.24

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1.5x scale

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.