Home / 4,977.18-6,868.66-2,739.20

Finding the Fourth Proportional to 4,977.18, 6,868.66 and 2,739.20

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Solution

The fourth proportional to 4,977.18, 6,868.66 and 2,739.20 is: 3,780.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,977.18 : 6,868.66 = 2,739.20 : x
  2. Step 2: Convert to fraction form
    4,977.18/6,868.66 = 2,739.20/x
  3. Step 3: Cross multiply
    4,977.18x = 6,868.66 × 2,739.20
  4. Step 4: Simplify right side
    4,977.18x = 18,814,633.47
  5. Step 5: Solve for x
    x = 18,814,633.47/4,977.18
  6. Step 6: Final answer
    x = 3,780.18

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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.