Home / 2,486.69-3,431.75-1,424.78

Finding the Fourth Proportional to 2,486.69, 3,431.75 and 1,424.78

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Solution

The fourth proportional to 2,486.69, 3,431.75 and 1,424.78 is: 1,966.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.69 : 3,431.75 = 1,424.78 : x
  2. Step 2: Convert to fraction form
    2,486.69/3,431.75 = 1,424.78/x
  3. Step 3: Cross multiply
    2,486.69x = 3,431.75 × 1,424.78
  4. Step 4: Simplify right side
    2,486.69x = 4,889,488.77
  5. Step 5: Solve for x
    x = 4,889,488.77/2,486.69
  6. Step 6: Final answer
    x = 1,966.26

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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.