Home / 1,553.81-2,144.23-845.65

Finding the Fourth Proportional to 1,553.81, 2,144.23 and 845.65

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Solution

The fourth proportional to 1,553.81, 2,144.23 and 845.65 is: 1,166.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.81 : 2,144.23 = 845.65 : x
  2. Step 2: Convert to fraction form
    1,553.81/2,144.23 = 845.65/x
  3. Step 3: Cross multiply
    1,553.81x = 2,144.23 × 845.65
  4. Step 4: Simplify right side
    1,553.81x = 1,813,265.38
  5. Step 5: Solve for x
    x = 1,813,265.38/1,553.81
  6. Step 6: Final answer
    x = 1,166.98

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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.