Home / 1,383.45-2,075.07-459.03

Finding the Fourth Proportional to 1,383.45, 2,075.07 and 459.03

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Solution

The fourth proportional to 1,383.45, 2,075.07 and 459.03 is: 688.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383.45 : 2,075.07 = 459.03 : x
  2. Step 2: Convert to fraction form
    1,383.45/2,075.07 = 459.03/x
  3. Step 3: Cross multiply
    1,383.45x = 2,075.07 × 459.03
  4. Step 4: Simplify right side
    1,383.45x = 952,519.38
  5. Step 5: Solve for x
    x = 952,519.38/1,383.45
  6. Step 6: Final answer
    x = 688.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.