Home / 1,605.34-2,215.38-897.27

Finding the Fourth Proportional to 1,605.34, 2,215.38 and 897.27

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Solution

The fourth proportional to 1,605.34, 2,215.38 and 897.27 is: 1,238.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,605.34 : 2,215.38 = 897.27 : x
  2. Step 2: Convert to fraction form
    1,605.34/2,215.38 = 897.27/x
  3. Step 3: Cross multiply
    1,605.34x = 2,215.38 × 897.27
  4. Step 4: Simplify right side
    1,605.34x = 1,987,794.01
  5. Step 5: Solve for x
    x = 1,987,794.01/1,605.34
  6. Step 6: Final answer
    x = 1,238.24

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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.