Home / 1,636.49-2,257.81-928.26

Finding the Fourth Proportional to 1,636.49, 2,257.81 and 928.26

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Solution

The fourth proportional to 1,636.49, 2,257.81 and 928.26 is: 1,280.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636.49 : 2,257.81 = 928.26 : x
  2. Step 2: Convert to fraction form
    1,636.49/2,257.81 = 928.26/x
  3. Step 3: Cross multiply
    1,636.49x = 2,257.81 × 928.26
  4. Step 4: Simplify right side
    1,636.49x = 2,095,832.39
  5. Step 5: Solve for x
    x = 2,095,832.39/1,636.49
  6. Step 6: Final answer
    x = 1,280.69

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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.