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Finding the Fourth Proportional to 6,621.54, 9,140.63 and 4,234.65

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Solution

The fourth proportional to 6,621.54, 9,140.63 and 4,234.65 is: 5,845.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.54 : 9,140.63 = 4,234.65 : x
  2. Step 2: Convert to fraction form
    6,621.54/9,140.63 = 4,234.65/x
  3. Step 3: Cross multiply
    6,621.54x = 9,140.63 × 4,234.65
  4. Step 4: Simplify right side
    6,621.54x = 38,707,347.66
  5. Step 5: Solve for x
    x = 38,707,347.66/6,621.54
  6. Step 6: Final answer
    x = 5,845.67

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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.