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Finding the Fourth Proportional to 4,770, 7,155.09 and 1,307.34

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Solution

The fourth proportional to 4,770, 7,155.09 and 1,307.34 is: 1,961.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,770 : 7,155.09 = 1,307.34 : x
  2. Step 2: Convert to fraction form
    4,770/7,155.09 = 1,307.34/x
  3. Step 3: Cross multiply
    4,770x = 7,155.09 × 1,307.34
  4. Step 4: Simplify right side
    4,770x = 9,354,135.36
  5. Step 5: Solve for x
    x = 9,354,135.36/4,770
  6. Step 6: Final answer
    x = 1,961.03

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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.