Home / 2,175.42-3,004.08-1,390.84

Finding the Fourth Proportional to 2,175.42, 3,004.08 and 1,390.84

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Solution

The fourth proportional to 2,175.42, 3,004.08 and 1,390.84 is: 1,920.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.42 : 3,004.08 = 1,390.84 : x
  2. Step 2: Convert to fraction form
    2,175.42/3,004.08 = 1,390.84/x
  3. Step 3: Cross multiply
    2,175.42x = 3,004.08 × 1,390.84
  4. Step 4: Simplify right side
    2,175.42x = 4,178,181.90
  5. Step 5: Solve for x
    x = 4,178,181.90/2,175.42
  6. Step 6: Final answer
    x = 1,920.63

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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.