Home / 1,586.10-2,189.07-1,212.36

Finding the Fourth Proportional to 1,586.10, 2,189.07 and 1,212.36

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Solution

The fourth proportional to 1,586.10, 2,189.07 and 1,212.36 is: 1,673.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,586.10 : 2,189.07 = 1,212.36 : x
  2. Step 2: Convert to fraction form
    1,586.10/2,189.07 = 1,212.36/x
  3. Step 3: Cross multiply
    1,586.10x = 2,189.07 × 1,212.36
  4. Step 4: Simplify right side
    1,586.10x = 2,653,940.91
  5. Step 5: Solve for x
    x = 2,653,940.91/1,586.10
  6. Step 6: Final answer
    x = 1,673.25

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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.