Home / 3,075.12-4,243.62-1,677.87

Finding the Fourth Proportional to 3,075.12, 4,243.62 and 1,677.87

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Solution

The fourth proportional to 3,075.12, 4,243.62 and 1,677.87 is: 2,315.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,075.12 : 4,243.62 = 1,677.87 : x
  2. Step 2: Convert to fraction form
    3,075.12/4,243.62 = 1,677.87/x
  3. Step 3: Cross multiply
    3,075.12x = 4,243.62 × 1,677.87
  4. Step 4: Simplify right side
    3,075.12x = 7,120,242.69
  5. Step 5: Solve for x
    x = 7,120,242.69/3,075.12
  6. Step 6: Final answer
    x = 2,315.44

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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.