Home / 7,243.21-10,870.31-4,777.21

Finding the Fourth Proportional to 7,243.21, 10,870.31 and 4,777.21

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Solution

The fourth proportional to 7,243.21, 10,870.31 and 4,777.21 is: 7,169.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,243.21 : 10,870.31 = 4,777.21 : x
  2. Step 2: Convert to fraction form
    7,243.21/10,870.31 = 4,777.21/x
  3. Step 3: Cross multiply
    7,243.21x = 10,870.31 × 4,777.21
  4. Step 4: Simplify right side
    7,243.21x = 51,929,753.64
  5. Step 5: Solve for x
    x = 51,929,753.64/7,243.21
  6. Step 6: Final answer
    x = 7,169.44

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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.