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Finding the Fourth Proportional to 8,975.07, 12,384.70 and 5,199.45

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Solution

The fourth proportional to 8,975.07, 12,384.70 and 5,199.45 is: 7,174.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,975.07 : 12,384.70 = 5,199.45 : x
  2. Step 2: Convert to fraction form
    8,975.07/12,384.70 = 5,199.45/x
  3. Step 3: Cross multiply
    8,975.07x = 12,384.70 × 5,199.45
  4. Step 4: Simplify right side
    8,975.07x = 64,393,566.49
  5. Step 5: Solve for x
    x = 64,393,566.49/8,975.07
  6. Step 6: Final answer
    x = 7,174.72

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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.