Home / 1,325.09-1,828.56-727.55

Finding the Fourth Proportional to 1,325.09, 1,828.56 and 727.55

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Solution

The fourth proportional to 1,325.09, 1,828.56 and 727.55 is: 1,003.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325.09 : 1,828.56 = 727.55 : x
  2. Step 2: Convert to fraction form
    1,325.09/1,828.56 = 727.55/x
  3. Step 3: Cross multiply
    1,325.09x = 1,828.56 × 727.55
  4. Step 4: Simplify right side
    1,325.09x = 1,330,359.69
  5. Step 5: Solve for x
    x = 1,330,359.69/1,325.09
  6. Step 6: Final answer
    x = 1,003.98

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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.