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Finding the Fourth Proportional to 3,390.60, 4,751.70 and 3,390.60

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Solution

The fourth proportional to 3,390.60, 4,751.70 and 3,390.60 is: 4,751.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.60 : 4,751.70 = 3,390.60 : x
  2. Step 2: Convert to fraction form
    3,390.60/4,751.70 = 3,390.60/x
  3. Step 3: Cross multiply
    3,390.60x = 4,751.70 × 3,390.60
  4. Step 4: Simplify right side
    3,390.60x = 16,111,114.02
  5. Step 5: Solve for x
    x = 16,111,114.02/3,390.60
  6. Step 6: Final answer
    x = 4,751.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.