Home / 1,383.61-2,075.75-459.26

Finding the Fourth Proportional to 1,383.61, 2,075.75 and 459.26

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Solution

The fourth proportional to 1,383.61, 2,075.75 and 459.26 is: 689.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383.61 : 2,075.75 = 459.26 : x
  2. Step 2: Convert to fraction form
    1,383.61/2,075.75 = 459.26/x
  3. Step 3: Cross multiply
    1,383.61x = 2,075.75 × 459.26
  4. Step 4: Simplify right side
    1,383.61x = 953,308.36
  5. Step 5: Solve for x
    x = 953,308.36/1,383.61
  6. Step 6: Final answer
    x = 689.00

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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.