Home / 1,890.31-2,608.77-1,144.30

Finding the Fourth Proportional to 1,890.31, 2,608.77 and 1,144.30

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Solution

The fourth proportional to 1,890.31, 2,608.77 and 1,144.30 is: 1,579.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.31 : 2,608.77 = 1,144.30 : x
  2. Step 2: Convert to fraction form
    1,890.31/2,608.77 = 1,144.30/x
  3. Step 3: Cross multiply
    1,890.31x = 2,608.77 × 1,144.30
  4. Step 4: Simplify right side
    1,890.31x = 2,985,215.51
  5. Step 5: Solve for x
    x = 2,985,215.51/1,890.31
  6. Step 6: Final answer
    x = 1,579.22

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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.