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Finding the Fourth Proportional to 3,512.64, 5,271.12 and 1,953.84

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Solution

The fourth proportional to 3,512.64, 5,271.12 and 1,953.84 is: 2,931.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,512.64 : 5,271.12 = 1,953.84 : x
  2. Step 2: Convert to fraction form
    3,512.64/5,271.12 = 1,953.84/x
  3. Step 3: Cross multiply
    3,512.64x = 5,271.12 × 1,953.84
  4. Step 4: Simplify right side
    3,512.64x = 10,298,925.10
  5. Step 5: Solve for x
    x = 10,298,925.10/3,512.64
  6. Step 6: Final answer
    x = 2,931.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.