Home / 7,801.21-11,701.96-3,640.09

Finding the Fourth Proportional to 7,801.21, 11,701.96 and 3,640.09

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Solution

The fourth proportional to 7,801.21, 11,701.96 and 3,640.09 is: 5,460.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,801.21 : 11,701.96 = 3,640.09 : x
  2. Step 2: Convert to fraction form
    7,801.21/11,701.96 = 3,640.09/x
  3. Step 3: Cross multiply
    7,801.21x = 11,701.96 × 3,640.09
  4. Step 4: Simplify right side
    7,801.21x = 42,596,129.07
  5. Step 5: Solve for x
    x = 42,596,129.07/7,801.21
  6. Step 6: Final answer
    x = 5,460.20

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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.