Home / 1,624.86-2,235.60-1,428.03

Finding the Fourth Proportional to 1,624.86, 2,235.60 and 1,428.03

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Solution

The fourth proportional to 1,624.86, 2,235.60 and 1,428.03 is: 1,964.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,624.86 : 2,235.60 = 1,428.03 : x
  2. Step 2: Convert to fraction form
    1,624.86/2,235.60 = 1,428.03/x
  3. Step 3: Cross multiply
    1,624.86x = 2,235.60 × 1,428.03
  4. Step 4: Simplify right side
    1,624.86x = 3,192,503.87
  5. Step 5: Solve for x
    x = 3,192,503.87/1,624.86
  6. Step 6: Final answer
    x = 1,964.79

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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.