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Finding the Fourth Proportional to 3,842.86, 5,303.20 and 2,164.17

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Solution

The fourth proportional to 3,842.86, 5,303.20 and 2,164.17 is: 2,986.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,842.86 : 5,303.20 = 2,164.17 : x
  2. Step 2: Convert to fraction form
    3,842.86/5,303.20 = 2,164.17/x
  3. Step 3: Cross multiply
    3,842.86x = 5,303.20 × 2,164.17
  4. Step 4: Simplify right side
    3,842.86x = 11,477,026.34
  5. Step 5: Solve for x
    x = 11,477,026.34/3,842.86
  6. Step 6: Final answer
    x = 2,986.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.