Home / 3,075.32-4,243.96-1,678.08

Finding the Fourth Proportional to 3,075.32, 4,243.96 and 1,678.08

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Solution

The fourth proportional to 3,075.32, 4,243.96 and 1,678.08 is: 2,315.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,075.32 : 4,243.96 = 1,678.08 : x
  2. Step 2: Convert to fraction form
    3,075.32/4,243.96 = 1,678.08/x
  3. Step 3: Cross multiply
    3,075.32x = 4,243.96 × 1,678.08
  4. Step 4: Simplify right side
    3,075.32x = 7,121,704.40
  5. Step 5: Solve for x
    x = 7,121,704.40/3,075.32
  6. Step 6: Final answer
    x = 2,315.76

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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.