Home / 5,091.76-7,636.28-1,971.19

Finding the Fourth Proportional to 5,091.76, 7,636.28 and 1,971.19

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Solution

The fourth proportional to 5,091.76, 7,636.28 and 1,971.19 is: 2,956.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,091.76 : 7,636.28 = 1,971.19 : x
  2. Step 2: Convert to fraction form
    5,091.76/7,636.28 = 1,971.19/x
  3. Step 3: Cross multiply
    5,091.76x = 7,636.28 × 1,971.19
  4. Step 4: Simplify right side
    5,091.76x = 15,052,515.51
  5. Step 5: Solve for x
    x = 15,052,515.51/5,091.76
  6. Step 6: Final answer
    x = 2,956.25

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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.