Home / 1,553.77-2,145.55-1,136.42

Finding the Fourth Proportional to 1,553.77, 2,145.55 and 1,136.42

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Solution

The fourth proportional to 1,553.77, 2,145.55 and 1,136.42 is: 1,569.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.77 : 2,145.55 = 1,136.42 : x
  2. Step 2: Convert to fraction form
    1,553.77/2,145.55 = 1,136.42/x
  3. Step 3: Cross multiply
    1,553.77x = 2,145.55 × 1,136.42
  4. Step 4: Simplify right side
    1,553.77x = 2,438,245.93
  5. Step 5: Solve for x
    x = 2,438,245.93/1,553.77
  6. Step 6: Final answer
    x = 1,569.25

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Half scale
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Double scale
Find fourth proportional to 1,554.77, 2,146.93 and 1,137.42
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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.