Home / 4,278.30-6,416.23-1,645.63

Finding the Fourth Proportional to 4,278.30, 6,416.23 and 1,645.63

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Solution

The fourth proportional to 4,278.30, 6,416.23 and 1,645.63 is: 2,467.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,278.30 : 6,416.23 = 1,645.63 : x
  2. Step 2: Convert to fraction form
    4,278.30/6,416.23 = 1,645.63/x
  3. Step 3: Cross multiply
    4,278.30x = 6,416.23 × 1,645.63
  4. Step 4: Simplify right side
    4,278.30x = 10,558,759.60
  5. Step 5: Solve for x
    x = 10,558,759.60/4,278.30
  6. Step 6: Final answer
    x = 2,467.98

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1.5x scale

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.