Home / 1,589.15-2,191.73-1,215.54

Finding the Fourth Proportional to 1,589.15, 2,191.73 and 1,215.54

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Solution

The fourth proportional to 1,589.15, 2,191.73 and 1,215.54 is: 1,676.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,589.15 : 2,191.73 = 1,215.54 : x
  2. Step 2: Convert to fraction form
    1,589.15/2,191.73 = 1,215.54/x
  3. Step 3: Cross multiply
    1,589.15x = 2,191.73 × 1,215.54
  4. Step 4: Simplify right side
    1,589.15x = 2,664,129.41
  5. Step 5: Solve for x
    x = 2,664,129.41/1,589.15
  6. Step 6: Final answer
    x = 1,676.45

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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.