Home / 1,982.32-2,960.56-1,686.67

Finding the Fourth Proportional to 1,982.32, 2,960.56 and 1,686.67

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Solution

The fourth proportional to 1,982.32, 2,960.56 and 1,686.67 is: 2,519.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982.32 : 2,960.56 = 1,686.67 : x
  2. Step 2: Convert to fraction form
    1,982.32/2,960.56 = 1,686.67/x
  3. Step 3: Cross multiply
    1,982.32x = 2,960.56 × 1,686.67
  4. Step 4: Simplify right side
    1,982.32x = 4,993,487.74
  5. Step 5: Solve for x
    x = 4,993,487.74/1,982.32
  6. Step 6: Final answer
    x = 2,519.01

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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.