Home / 2,621.59-3,619.03-1,678.75

Finding the Fourth Proportional to 2,621.59, 3,619.03 and 1,678.75

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Solution

The fourth proportional to 2,621.59, 3,619.03 and 1,678.75 is: 2,317.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.59 : 3,619.03 = 1,678.75 : x
  2. Step 2: Convert to fraction form
    2,621.59/3,619.03 = 1,678.75/x
  3. Step 3: Cross multiply
    2,621.59x = 3,619.03 × 1,678.75
  4. Step 4: Simplify right side
    2,621.59x = 6,075,446.69
  5. Step 5: Solve for x
    x = 6,075,446.69/2,621.59
  6. Step 6: Final answer
    x = 2,317.47

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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.