Home / 5,209.79-7,189.26-2,971.59

Finding the Fourth Proportional to 5,209.79, 7,189.26 and 2,971.59

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Solution

The fourth proportional to 5,209.79, 7,189.26 and 2,971.59 is: 4,100.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.79 : 7,189.26 = 2,971.59 : x
  2. Step 2: Convert to fraction form
    5,209.79/7,189.26 = 2,971.59/x
  3. Step 3: Cross multiply
    5,209.79x = 7,189.26 × 2,971.59
  4. Step 4: Simplify right side
    5,209.79x = 21,363,495.02
  5. Step 5: Solve for x
    x = 21,363,495.02/5,209.79
  6. Step 6: Final answer
    x = 4,100.64

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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.