Home / 2,179.87-3,008.07-1,235.57

Finding the Fourth Proportional to 2,179.87, 3,008.07 and 1,235.57

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Solution

The fourth proportional to 2,179.87, 3,008.07 and 1,235.57 is: 1,705.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.87 : 3,008.07 = 1,235.57 : x
  2. Step 2: Convert to fraction form
    2,179.87/3,008.07 = 1,235.57/x
  3. Step 3: Cross multiply
    2,179.87x = 3,008.07 × 1,235.57
  4. Step 4: Simplify right side
    2,179.87x = 3,716,666.01
  5. Step 5: Solve for x
    x = 3,716,666.01/2,179.87
  6. Step 6: Final answer
    x = 1,705.00

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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.