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Finding the Fourth Proportional to 4,705.60, 7,053.60 and 2,756.80

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Solution

The fourth proportional to 4,705.60, 7,053.60 and 2,756.80 is: 4,132.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,705.60 : 7,053.60 = 2,756.80 : x
  2. Step 2: Convert to fraction form
    4,705.60/7,053.60 = 2,756.80/x
  3. Step 3: Cross multiply
    4,705.60x = 7,053.60 × 2,756.80
  4. Step 4: Simplify right side
    4,705.60x = 19,445,364.48
  5. Step 5: Solve for x
    x = 19,445,364.48/4,705.60
  6. Step 6: Final answer
    x = 4,132.39

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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.