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Finding the Fourth Proportional to 4,705.14, 7,051.60 and 1,928.60

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Solution

The fourth proportional to 4,705.14, 7,051.60 and 1,928.60 is: 2,890.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,705.14 : 7,051.60 = 1,928.60 : x
  2. Step 2: Convert to fraction form
    4,705.14/7,051.60 = 1,928.60/x
  3. Step 3: Cross multiply
    4,705.14x = 7,051.60 × 1,928.60
  4. Step 4: Simplify right side
    4,705.14x = 13,599,715.76
  5. Step 5: Solve for x
    x = 13,599,715.76/4,705.14
  6. Step 6: Final answer
    x = 2,890.40

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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.