Home / 1,636.19-2,257.89-890.13

Finding the Fourth Proportional to 1,636.19, 2,257.89 and 890.13

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Solution

The fourth proportional to 1,636.19, 2,257.89 and 890.13 is: 1,228.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636.19 : 2,257.89 = 890.13 : x
  2. Step 2: Convert to fraction form
    1,636.19/2,257.89 = 890.13/x
  3. Step 3: Cross multiply
    1,636.19x = 2,257.89 × 890.13
  4. Step 4: Simplify right side
    1,636.19x = 2,009,815.63
  5. Step 5: Solve for x
    x = 2,009,815.63/1,636.19
  6. Step 6: Final answer
    x = 1,228.35

Related Problems

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Half scale
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Double scale
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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.