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Finding the Fourth Proportional to 9,003.36, 12,410.64 and 8,828.40

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Solution

The fourth proportional to 9,003.36, 12,410.64 and 8,828.40 is: 12,169.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,003.36 : 12,410.64 = 8,828.40 : x
  2. Step 2: Convert to fraction form
    9,003.36/12,410.64 = 8,828.40/x
  3. Step 3: Cross multiply
    9,003.36x = 12,410.64 × 8,828.40
  4. Step 4: Simplify right side
    9,003.36x = 109,566,094.18
  5. Step 5: Solve for x
    x = 109,566,094.18/9,003.36
  6. Step 6: Final answer
    x = 12,169.47

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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.