Home / 5,209.36-7,189.10-2,971.59

Finding the Fourth Proportional to 5,209.36, 7,189.10 and 2,971.59

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Solution

The fourth proportional to 5,209.36, 7,189.10 and 2,971.59 is: 4,100.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.36 : 7,189.10 = 2,971.59 : x
  2. Step 2: Convert to fraction form
    5,209.36/7,189.10 = 2,971.59/x
  3. Step 3: Cross multiply
    5,209.36x = 7,189.10 × 2,971.59
  4. Step 4: Simplify right side
    5,209.36x = 21,363,043.71
  5. Step 5: Solve for x
    x = 21,363,043.71/5,209.36
  6. Step 6: Final answer
    x = 4,100.89

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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.