Home / 4,977.36-6,868.80-2,739.28

Finding the Fourth Proportional to 4,977.36, 6,868.80 and 2,739.28

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Solution

The fourth proportional to 4,977.36, 6,868.80 and 2,739.28 is: 3,780.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,977.36 : 6,868.80 = 2,739.28 : x
  2. Step 2: Convert to fraction form
    4,977.36/6,868.80 = 2,739.28/x
  3. Step 3: Cross multiply
    4,977.36x = 6,868.80 × 2,739.28
  4. Step 4: Simplify right side
    4,977.36x = 18,815,566.46
  5. Step 5: Solve for x
    x = 18,815,566.46/4,977.36
  6. Step 6: Final answer
    x = 3,780.23

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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.