Home / 5,291.21-7,916.96-3,290.51

Finding the Fourth Proportional to 5,291.21, 7,916.96 and 3,290.51

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Solution

The fourth proportional to 5,291.21, 7,916.96 and 3,290.51 is: 4,923.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,291.21 : 7,916.96 = 3,290.51 : x
  2. Step 2: Convert to fraction form
    5,291.21/7,916.96 = 3,290.51/x
  3. Step 3: Cross multiply
    5,291.21x = 7,916.96 × 3,290.51
  4. Step 4: Simplify right side
    5,291.21x = 26,050,780.01
  5. Step 5: Solve for x
    x = 26,050,780.01/5,291.21
  6. Step 6: Final answer
    x = 4,923.41

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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.