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Finding the Fourth Proportional to 2,128.98, 3,193.48 and 568.99

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Solution

The fourth proportional to 2,128.98, 3,193.48 and 568.99 is: 853.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.98 : 3,193.48 = 568.99 : x
  2. Step 2: Convert to fraction form
    2,128.98/3,193.48 = 568.99/x
  3. Step 3: Cross multiply
    2,128.98x = 3,193.48 × 568.99
  4. Step 4: Simplify right side
    2,128.98x = 1,817,058.19
  5. Step 5: Solve for x
    x = 1,817,058.19/2,128.98
  6. Step 6: Final answer
    x = 853.49

Related Problems

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Half scale
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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.