Home / 4,977.12-6,868.48-2,739.20

Finding the Fourth Proportional to 4,977.12, 6,868.48 and 2,739.20

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Solution

The fourth proportional to 4,977.12, 6,868.48 and 2,739.20 is: 3,780.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,977.12 : 6,868.48 = 2,739.20 : x
  2. Step 2: Convert to fraction form
    4,977.12/6,868.48 = 2,739.20/x
  3. Step 3: Cross multiply
    4,977.12x = 6,868.48 × 2,739.20
  4. Step 4: Simplify right side
    4,977.12x = 18,814,140.42
  5. Step 5: Solve for x
    x = 18,814,140.42/4,977.12
  6. Step 6: Final answer
    x = 3,780.13

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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.