Home / 1,598.35-2,205.79-890.23

Finding the Fourth Proportional to 1,598.35, 2,205.79 and 890.23

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Solution

The fourth proportional to 1,598.35, 2,205.79 and 890.23 is: 1,228.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,598.35 : 2,205.79 = 890.23 : x
  2. Step 2: Convert to fraction form
    1,598.35/2,205.79 = 890.23/x
  3. Step 3: Cross multiply
    1,598.35x = 2,205.79 × 890.23
  4. Step 4: Simplify right side
    1,598.35x = 1,963,644.95
  5. Step 5: Solve for x
    x = 1,963,644.95/1,598.35
  6. Step 6: Final answer
    x = 1,228.55

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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.