Home / 3,191.81-4,762.08-2,840.99

Finding the Fourth Proportional to 3,191.81, 4,762.08 and 2,840.99

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Solution

The fourth proportional to 3,191.81, 4,762.08 and 2,840.99 is: 4,238.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.81 : 4,762.08 = 2,840.99 : x
  2. Step 2: Convert to fraction form
    3,191.81/4,762.08 = 2,840.99/x
  3. Step 3: Cross multiply
    3,191.81x = 4,762.08 × 2,840.99
  4. Step 4: Simplify right side
    3,191.81x = 13,528,997.85
  5. Step 5: Solve for x
    x = 13,528,997.85/3,191.81
  6. Step 6: Final answer
    x = 4,238.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.