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Finding the Fourth Proportional to 6,672.72, 9,209.76 and 3,840.48

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Solution

The fourth proportional to 6,672.72, 9,209.76 and 3,840.48 is: 5,300.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,672.72 : 9,209.76 = 3,840.48 : x
  2. Step 2: Convert to fraction form
    6,672.72/9,209.76 = 3,840.48/x
  3. Step 3: Cross multiply
    6,672.72x = 9,209.76 × 3,840.48
  4. Step 4: Simplify right side
    6,672.72x = 35,369,899.08
  5. Step 5: Solve for x
    x = 35,369,899.08/6,672.72
  6. Step 6: Final answer
    x = 5,300.67

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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.