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Finding the Fourth Proportional to 4,751.55, 7,128.54 and 1,829.07

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Solution

The fourth proportional to 4,751.55, 7,128.54 and 1,829.07 is: 2,744.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,751.55 : 7,128.54 = 1,829.07 : x
  2. Step 2: Convert to fraction form
    4,751.55/7,128.54 = 1,829.07/x
  3. Step 3: Cross multiply
    4,751.55x = 7,128.54 × 1,829.07
  4. Step 4: Simplify right side
    4,751.55x = 13,038,598.66
  5. Step 5: Solve for x
    x = 13,038,598.66/4,751.55
  6. Step 6: Final answer
    x = 2,744.07

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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.