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Finding the Fourth Proportional to 3,572.64, 4,931.58 and 3,198.96

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Solution

The fourth proportional to 3,572.64, 4,931.58 and 3,198.96 is: 4,415.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,572.64 : 4,931.58 = 3,198.96 : x
  2. Step 2: Convert to fraction form
    3,572.64/4,931.58 = 3,198.96/x
  3. Step 3: Cross multiply
    3,572.64x = 4,931.58 × 3,198.96
  4. Step 4: Simplify right side
    3,572.64x = 15,775,927.16
  5. Step 5: Solve for x
    x = 15,775,927.16/3,572.64
  6. Step 6: Final answer
    x = 4,415.76

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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.