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Finding the Fourth Proportional to 3,600.64, 4,966.40 and 2,421.12

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Solution

The fourth proportional to 3,600.64, 4,966.40 and 2,421.12 is: 3,339.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,600.64 : 4,966.40 = 2,421.12 : x
  2. Step 2: Convert to fraction form
    3,600.64/4,966.40 = 2,421.12/x
  3. Step 3: Cross multiply
    3,600.64x = 4,966.40 × 2,421.12
  4. Step 4: Simplify right side
    3,600.64x = 12,024,250.37
  5. Step 5: Solve for x
    x = 12,024,250.37/3,600.64
  6. Step 6: Final answer
    x = 3,339.48

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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.