Home / 1,612.23-2,418.36-638.34

Finding the Fourth Proportional to 1,612.23, 2,418.36 and 638.34

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Solution

The fourth proportional to 1,612.23, 2,418.36 and 638.34 is: 957.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612.23 : 2,418.36 = 638.34 : x
  2. Step 2: Convert to fraction form
    1,612.23/2,418.36 = 638.34/x
  3. Step 3: Cross multiply
    1,612.23x = 2,418.36 × 638.34
  4. Step 4: Simplify right side
    1,612.23x = 1,543,735.92
  5. Step 5: Solve for x
    x = 1,543,735.92/1,612.23
  6. Step 6: Final answer
    x = 957.52

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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.