Home / 3,977.31-5,488.67-2,208.99

Finding the Fourth Proportional to 3,977.31, 5,488.67 and 2,208.99

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Solution

The fourth proportional to 3,977.31, 5,488.67 and 2,208.99 is: 3,048.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.31 : 5,488.67 = 2,208.99 : x
  2. Step 2: Convert to fraction form
    3,977.31/5,488.67 = 2,208.99/x
  3. Step 3: Cross multiply
    3,977.31x = 5,488.67 × 2,208.99
  4. Step 4: Simplify right side
    3,977.31x = 12,124,417.14
  5. Step 5: Solve for x
    x = 12,124,417.14/3,977.31
  6. Step 6: Final answer
    x = 3,048.40

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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.