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Finding the Fourth Proportional to 6,348.64, 8,761.20 and 3,554.08

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Solution

The fourth proportional to 6,348.64, 8,761.20 and 3,554.08 is: 4,904.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,348.64 : 8,761.20 = 3,554.08 : x
  2. Step 2: Convert to fraction form
    6,348.64/8,761.20 = 3,554.08/x
  3. Step 3: Cross multiply
    6,348.64x = 8,761.20 × 3,554.08
  4. Step 4: Simplify right side
    6,348.64x = 31,138,005.70
  5. Step 5: Solve for x
    x = 31,138,005.70/6,348.64
  6. Step 6: Final answer
    x = 4,904.67

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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.