Home / 1,728.38-2,589.01-904.16

Finding the Fourth Proportional to 1,728.38, 2,589.01 and 904.16

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Solution

The fourth proportional to 1,728.38, 2,589.01 and 904.16 is: 1,354.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.38 : 2,589.01 = 904.16 : x
  2. Step 2: Convert to fraction form
    1,728.38/2,589.01 = 904.16/x
  3. Step 3: Cross multiply
    1,728.38x = 2,589.01 × 904.16
  4. Step 4: Simplify right side
    1,728.38x = 2,340,883.49
  5. Step 5: Solve for x
    x = 2,340,883.49/1,728.38
  6. Step 6: Final answer
    x = 1,354.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.