Home / 1,620.63-2,235.76-1,030.85

Finding the Fourth Proportional to 1,620.63, 2,235.76 and 1,030.85

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Solution

The fourth proportional to 1,620.63, 2,235.76 and 1,030.85 is: 1,422.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.63 : 2,235.76 = 1,030.85 : x
  2. Step 2: Convert to fraction form
    1,620.63/2,235.76 = 1,030.85/x
  3. Step 3: Cross multiply
    1,620.63x = 2,235.76 × 1,030.85
  4. Step 4: Simplify right side
    1,620.63x = 2,304,733.20
  5. Step 5: Solve for x
    x = 2,304,733.20/1,620.63
  6. Step 6: Final answer
    x = 1,422.12

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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.