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Finding the Fourth Proportional to 3,245.64, 4,479.20 and 1,848.40

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Solution

The fourth proportional to 3,245.64, 4,479.20 and 1,848.40 is: 2,550.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,245.64 : 4,479.20 = 1,848.40 : x
  2. Step 2: Convert to fraction form
    3,245.64/4,479.20 = 1,848.40/x
  3. Step 3: Cross multiply
    3,245.64x = 4,479.20 × 1,848.40
  4. Step 4: Simplify right side
    3,245.64x = 8,279,353.28
  5. Step 5: Solve for x
    x = 8,279,353.28/3,245.64
  6. Step 6: Final answer
    x = 2,550.92

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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.