Home / 1,615.36-2,230.32-1,150.96

Finding the Fourth Proportional to 1,615.36, 2,230.32 and 1,150.96

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Solution

The fourth proportional to 1,615.36, 2,230.32 and 1,150.96 is: 1,589.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.36 : 2,230.32 = 1,150.96 : x
  2. Step 2: Convert to fraction form
    1,615.36/2,230.32 = 1,150.96/x
  3. Step 3: Cross multiply
    1,615.36x = 2,230.32 × 1,150.96
  4. Step 4: Simplify right side
    1,615.36x = 2,567,009.11
  5. Step 5: Solve for x
    x = 2,567,009.11/1,615.36
  6. Step 6: Final answer
    x = 1,589.13

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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.