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Finding the Fourth Proportional to 5,128.93, 7,693.77 and 1,842.05

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Solution

The fourth proportional to 5,128.93, 7,693.77 and 1,842.05 is: 2,763.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.93 : 7,693.77 = 1,842.05 : x
  2. Step 2: Convert to fraction form
    5,128.93/7,693.77 = 1,842.05/x
  3. Step 3: Cross multiply
    5,128.93x = 7,693.77 × 1,842.05
  4. Step 4: Simplify right side
    5,128.93x = 14,172,309.03
  5. Step 5: Solve for x
    x = 14,172,309.03/5,128.93
  6. Step 6: Final answer
    x = 2,763.21

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1.5x scale

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.