Home / 1,620.38-2,235.42-1,030.60

Finding the Fourth Proportional to 1,620.38, 2,235.42 and 1,030.60

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Solution

The fourth proportional to 1,620.38, 2,235.42 and 1,030.60 is: 1,421.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.38 : 2,235.42 = 1,030.60 : x
  2. Step 2: Convert to fraction form
    1,620.38/2,235.42 = 1,030.60/x
  3. Step 3: Cross multiply
    1,620.38x = 2,235.42 × 1,030.60
  4. Step 4: Simplify right side
    1,620.38x = 2,303,818.26
  5. Step 5: Solve for x
    x = 2,303,818.26/1,620.38
  6. Step 6: Final answer
    x = 1,421.78

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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.