Home / 1,640.21-2,263.01-1,010.43

Finding the Fourth Proportional to 1,640.21, 2,263.01 and 1,010.43

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Solution

The fourth proportional to 1,640.21, 2,263.01 and 1,010.43 is: 1,394.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.21 : 2,263.01 = 1,010.43 : x
  2. Step 2: Convert to fraction form
    1,640.21/2,263.01 = 1,010.43/x
  3. Step 3: Cross multiply
    1,640.21x = 2,263.01 × 1,010.43
  4. Step 4: Simplify right side
    1,640.21x = 2,286,608.14
  5. Step 5: Solve for x
    x = 2,286,608.14/1,640.21
  6. Step 6: Final answer
    x = 1,394.10

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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.