Home / 3,075.89-4,244.79-1,678.64

Finding the Fourth Proportional to 3,075.89, 4,244.79 and 1,678.64

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Solution

The fourth proportional to 3,075.89, 4,244.79 and 1,678.64 is: 2,316.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,075.89 : 4,244.79 = 1,678.64 : x
  2. Step 2: Convert to fraction form
    3,075.89/4,244.79 = 1,678.64/x
  3. Step 3: Cross multiply
    3,075.89x = 4,244.79 × 1,678.64
  4. Step 4: Simplify right side
    3,075.89x = 7,125,474.29
  5. Step 5: Solve for x
    x = 7,125,474.29/3,075.89
  6. Step 6: Final answer
    x = 2,316.56

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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.