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Finding the Fourth Proportional to 6,390.41, 8,815.23 and 5,975.42

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Solution

The fourth proportional to 6,390.41, 8,815.23 and 5,975.42 is: 8,242.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,390.41 : 8,815.23 = 5,975.42 : x
  2. Step 2: Convert to fraction form
    6,390.41/8,815.23 = 5,975.42/x
  3. Step 3: Cross multiply
    6,390.41x = 8,815.23 × 5,975.42
  4. Step 4: Simplify right side
    6,390.41x = 52,674,657.57
  5. Step 5: Solve for x
    x = 52,674,657.57/6,390.41
  6. Step 6: Final answer
    x = 8,242.77

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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.