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Finding the Fourth Proportional to 8,798, 12,141.29 and 6,561.86

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Solution

The fourth proportional to 8,798, 12,141.29 and 6,561.86 is: 9,055.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,798 : 12,141.29 = 6,561.86 : x
  2. Step 2: Convert to fraction form
    8,798/12,141.29 = 6,561.86/x
  3. Step 3: Cross multiply
    8,798x = 12,141.29 × 6,561.86
  4. Step 4: Simplify right side
    8,798x = 79,669,412.39
  5. Step 5: Solve for x
    x = 79,669,412.39/8,798
  6. Step 6: Final answer
    x = 9,055.40

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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.