Home / 7,021.21-10,531.80-2,860.31

Finding the Fourth Proportional to 7,021.21, 10,531.80 and 2,860.31

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Solution

The fourth proportional to 7,021.21, 10,531.80 and 2,860.31 is: 4,290.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.21 : 10,531.80 = 2,860.31 : x
  2. Step 2: Convert to fraction form
    7,021.21/10,531.80 = 2,860.31/x
  3. Step 3: Cross multiply
    7,021.21x = 10,531.80 × 2,860.31
  4. Step 4: Simplify right side
    7,021.21x = 30,124,145.90
  5. Step 5: Solve for x
    x = 30,124,145.90/7,021.21
  6. Step 6: Final answer
    x = 4,290.45

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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.