Home / 2,170.07-2,994.68-1,286.30

Finding the Fourth Proportional to 2,170.07, 2,994.68 and 1,286.30

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Solution

The fourth proportional to 2,170.07, 2,994.68 and 1,286.30 is: 1,775.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.07 : 2,994.68 = 1,286.30 : x
  2. Step 2: Convert to fraction form
    2,170.07/2,994.68 = 1,286.30/x
  3. Step 3: Cross multiply
    2,170.07x = 2,994.68 × 1,286.30
  4. Step 4: Simplify right side
    2,170.07x = 3,852,045.13
  5. Step 5: Solve for x
    x = 3,852,045.13/2,170.07
  6. Step 6: Final answer
    x = 1,775.08

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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.