Home / 1,165.39-1,603.66-1,158.19

Finding the Fourth Proportional to 1,165.39, 1,603.66 and 1,158.19

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Solution

The fourth proportional to 1,165.39, 1,603.66 and 1,158.19 is: 1,593.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,165.39 : 1,603.66 = 1,158.19 : x
  2. Step 2: Convert to fraction form
    1,165.39/1,603.66 = 1,158.19/x
  3. Step 3: Cross multiply
    1,165.39x = 1,603.66 × 1,158.19
  4. Step 4: Simplify right side
    1,165.39x = 1,857,342.98
  5. Step 5: Solve for x
    x = 1,857,342.98/1,165.39
  6. Step 6: Final answer
    x = 1,593.75

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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.