Home / 2,161.91-2,983.23-1,490.45

Finding the Fourth Proportional to 2,161.91, 2,983.23 and 1,490.45

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Solution

The fourth proportional to 2,161.91, 2,983.23 and 1,490.45 is: 2,056.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.91 : 2,983.23 = 1,490.45 : x
  2. Step 2: Convert to fraction form
    2,161.91/2,983.23 = 1,490.45/x
  3. Step 3: Cross multiply
    2,161.91x = 2,983.23 × 1,490.45
  4. Step 4: Simplify right side
    2,161.91x = 4,446,340.24
  5. Step 5: Solve for x
    x = 4,446,340.24/2,161.91
  6. Step 6: Final answer
    x = 2,056.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.