Home / 3,191.34-4,780.08-1,628.67

Finding the Fourth Proportional to 3,191.34, 4,780.08 and 1,628.67

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Solution

The fourth proportional to 3,191.34, 4,780.08 and 1,628.67 is: 2,439.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.34 : 4,780.08 = 1,628.67 : x
  2. Step 2: Convert to fraction form
    3,191.34/4,780.08 = 1,628.67/x
  3. Step 3: Cross multiply
    3,191.34x = 4,780.08 × 1,628.67
  4. Step 4: Simplify right side
    3,191.34x = 7,785,172.89
  5. Step 5: Solve for x
    x = 7,785,172.89/3,191.34
  6. Step 6: Final answer
    x = 2,439.47

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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.