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Finding the Fourth Proportional to 3,051.59, 4,577.39 and 860.32

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Solution

The fourth proportional to 3,051.59, 4,577.39 and 860.32 is: 1,290.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,051.59 : 4,577.39 = 860.32 : x
  2. Step 2: Convert to fraction form
    3,051.59/4,577.39 = 860.32/x
  3. Step 3: Cross multiply
    3,051.59x = 4,577.39 × 860.32
  4. Step 4: Simplify right side
    3,051.59x = 3,938,020.16
  5. Step 5: Solve for x
    x = 3,938,020.16/3,051.59
  6. Step 6: Final answer
    x = 1,290.48

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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.