Home / 2,158.36-2,971.86-1,628

Finding the Fourth Proportional to 2,158.36, 2,971.86 and 1,628

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Solution

The fourth proportional to 2,158.36, 2,971.86 and 1,628 is: 2,241.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158.36 : 2,971.86 = 1,628 : x
  2. Step 2: Convert to fraction form
    2,158.36/2,971.86 = 1,628/x
  3. Step 3: Cross multiply
    2,158.36x = 2,971.86 × 1,628
  4. Step 4: Simplify right side
    2,158.36x = 4,838,188.08
  5. Step 5: Solve for x
    x = 4,838,188.08/2,158.36
  6. Step 6: Final answer
    x = 2,241.60

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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.