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Finding the Fourth Proportional to 6,479.20, 8,941.20 and 3,646.36

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Solution

The fourth proportional to 6,479.20, 8,941.20 and 3,646.36 is: 5,031.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,479.20 : 8,941.20 = 3,646.36 : x
  2. Step 2: Convert to fraction form
    6,479.20/8,941.20 = 3,646.36/x
  3. Step 3: Cross multiply
    6,479.20x = 8,941.20 × 3,646.36
  4. Step 4: Simplify right side
    6,479.20x = 32,602,834.03
  5. Step 5: Solve for x
    x = 32,602,834.03/6,479.20
  6. Step 6: Final answer
    x = 5,031.92

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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.