Home / 3,383.61-5,075.70-918.45

Finding the Fourth Proportional to 3,383.61, 5,075.70 and 918.45

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Solution

The fourth proportional to 3,383.61, 5,075.70 and 918.45 is: 1,377.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,383.61 : 5,075.70 = 918.45 : x
  2. Step 2: Convert to fraction form
    3,383.61/5,075.70 = 918.45/x
  3. Step 3: Cross multiply
    3,383.61x = 5,075.70 × 918.45
  4. Step 4: Simplify right side
    3,383.61x = 4,661,776.67
  5. Step 5: Solve for x
    x = 4,661,776.67/3,383.61
  6. Step 6: Final answer
    x = 1,377.75

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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.