Home / 4,678.74-6,455.97-2,689.38

Finding the Fourth Proportional to 4,678.74, 6,455.97 and 2,689.38

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Solution

The fourth proportional to 4,678.74, 6,455.97 and 2,689.38 is: 3,710.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678.74 : 6,455.97 = 2,689.38 : x
  2. Step 2: Convert to fraction form
    4,678.74/6,455.97 = 2,689.38/x
  3. Step 3: Cross multiply
    4,678.74x = 6,455.97 × 2,689.38
  4. Step 4: Simplify right side
    4,678.74x = 17,362,556.60
  5. Step 5: Solve for x
    x = 17,362,556.60/4,678.74
  6. Step 6: Final answer
    x = 3,710.95

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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.