Home / 1,608.89-2,220.36-1,215.23

Finding the Fourth Proportional to 1,608.89, 2,220.36 and 1,215.23

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Solution

The fourth proportional to 1,608.89, 2,220.36 and 1,215.23 is: 1,677.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,608.89 : 2,220.36 = 1,215.23 : x
  2. Step 2: Convert to fraction form
    1,608.89/2,220.36 = 1,215.23/x
  3. Step 3: Cross multiply
    1,608.89x = 2,220.36 × 1,215.23
  4. Step 4: Simplify right side
    1,608.89x = 2,698,248.08
  5. Step 5: Solve for x
    x = 2,698,248.08/1,608.89
  6. Step 6: Final answer
    x = 1,677.09

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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.