Home / 2,064.16-3,091.36-1,628.40

Finding the Fourth Proportional to 2,064.16, 3,091.36 and 1,628.40

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Solution

The fourth proportional to 2,064.16, 3,091.36 and 1,628.40 is: 2,438.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,064.16 : 3,091.36 = 1,628.40 : x
  2. Step 2: Convert to fraction form
    2,064.16/3,091.36 = 1,628.40/x
  3. Step 3: Cross multiply
    2,064.16x = 3,091.36 × 1,628.40
  4. Step 4: Simplify right side
    2,064.16x = 5,033,970.62
  5. Step 5: Solve for x
    x = 5,033,970.62/2,064.16
  6. Step 6: Final answer
    x = 2,438.75

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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.