Home / 4,910.40-6,779.52-3,859.20

Finding the Fourth Proportional to 4,910.40, 6,779.52 and 3,859.20

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Solution

The fourth proportional to 4,910.40, 6,779.52 and 3,859.20 is: 5,328.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,910.40 : 6,779.52 = 3,859.20 : x
  2. Step 2: Convert to fraction form
    4,910.40/6,779.52 = 3,859.20/x
  3. Step 3: Cross multiply
    4,910.40x = 6,779.52 × 3,859.20
  4. Step 4: Simplify right side
    4,910.40x = 26,163,523.58
  5. Step 5: Solve for x
    x = 26,163,523.58/4,910.40
  6. Step 6: Final answer
    x = 5,328.19

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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.