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Finding the Fourth Proportional to 8,790.34, 13,168.94 and 4,342.79

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Solution

The fourth proportional to 8,790.34, 13,168.94 and 4,342.79 is: 6,506.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,790.34 : 13,168.94 = 4,342.79 : x
  2. Step 2: Convert to fraction form
    8,790.34/13,168.94 = 4,342.79/x
  3. Step 3: Cross multiply
    8,790.34x = 13,168.94 × 4,342.79
  4. Step 4: Simplify right side
    8,790.34x = 57,189,940.94
  5. Step 5: Solve for x
    x = 57,189,940.94/8,790.34
  6. Step 6: Final answer
    x = 6,506.00

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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.