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Finding the Fourth Proportional to 7,392.15, 11,079.05 and 6,506.42

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Solution

The fourth proportional to 7,392.15, 11,079.05 and 6,506.42 is: 9,751.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,392.15 : 11,079.05 = 6,506.42 : x
  2. Step 2: Convert to fraction form
    7,392.15/11,079.05 = 6,506.42/x
  3. Step 3: Cross multiply
    7,392.15x = 11,079.05 × 6,506.42
  4. Step 4: Simplify right side
    7,392.15x = 72,084,864.57
  5. Step 5: Solve for x
    x = 72,084,864.57/7,392.15
  6. Step 6: Final answer
    x = 9,751.54

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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.