Home / 1,193.14-1,646.40-669.16

Finding the Fourth Proportional to 1,193.14, 1,646.40 and 669.16

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Solution

The fourth proportional to 1,193.14, 1,646.40 and 669.16 is: 923.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,193.14 : 1,646.40 = 669.16 : x
  2. Step 2: Convert to fraction form
    1,193.14/1,646.40 = 669.16/x
  3. Step 3: Cross multiply
    1,193.14x = 1,646.40 × 669.16
  4. Step 4: Simplify right side
    1,193.14x = 1,101,705.02
  5. Step 5: Solve for x
    x = 1,101,705.02/1,193.14
  6. Step 6: Final answer
    x = 923.37

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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.