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Finding the Fourth Proportional to 2,855.40, 4,283.10 and 1,554.14

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Solution

The fourth proportional to 2,855.40, 4,283.10 and 1,554.14 is: 2,331.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.40 : 4,283.10 = 1,554.14 : x
  2. Step 2: Convert to fraction form
    2,855.40/4,283.10 = 1,554.14/x
  3. Step 3: Cross multiply
    2,855.40x = 4,283.10 × 1,554.14
  4. Step 4: Simplify right side
    2,855.40x = 6,656,537.03
  5. Step 5: Solve for x
    x = 6,656,537.03/2,855.40
  6. Step 6: Final answer
    x = 2,331.21

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.