Home / 1,423.56-2,120.91-1,417.80

Finding the Fourth Proportional to 1,423.56, 2,120.91 and 1,417.80

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Solution

The fourth proportional to 1,423.56, 2,120.91 and 1,417.80 is: 2,112.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423.56 : 2,120.91 = 1,417.80 : x
  2. Step 2: Convert to fraction form
    1,423.56/2,120.91 = 1,417.80/x
  3. Step 3: Cross multiply
    1,423.56x = 2,120.91 × 1,417.80
  4. Step 4: Simplify right side
    1,423.56x = 3,007,026.20
  5. Step 5: Solve for x
    x = 3,007,026.20/1,423.56
  6. Step 6: Final answer
    x = 2,112.33

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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.