Home / 4,172.72-6,259.14-1,981.67

Finding the Fourth Proportional to 4,172.72, 6,259.14 and 1,981.67

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Solution

The fourth proportional to 4,172.72, 6,259.14 and 1,981.67 is: 2,972.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,172.72 : 6,259.14 = 1,981.67 : x
  2. Step 2: Convert to fraction form
    4,172.72/6,259.14 = 1,981.67/x
  3. Step 3: Cross multiply
    4,172.72x = 6,259.14 × 1,981.67
  4. Step 4: Simplify right side
    4,172.72x = 12,403,518.67
  5. Step 5: Solve for x
    x = 12,403,518.67/4,172.72
  6. Step 6: Final answer
    x = 2,972.53

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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.