Home / 3,903.06-5,385.48-2,645.12

Finding the Fourth Proportional to 3,903.06, 5,385.48 and 2,645.12

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Solution

The fourth proportional to 3,903.06, 5,385.48 and 2,645.12 is: 3,649.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,903.06 : 5,385.48 = 2,645.12 : x
  2. Step 2: Convert to fraction form
    3,903.06/5,385.48 = 2,645.12/x
  3. Step 3: Cross multiply
    3,903.06x = 5,385.48 × 2,645.12
  4. Step 4: Simplify right side
    3,903.06x = 14,245,240.86
  5. Step 5: Solve for x
    x = 14,245,240.86/3,903.06
  6. Step 6: Final answer
    x = 3,649.76

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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.