Home / 1,743.12-2,404.62-1,428.84

Finding the Fourth Proportional to 1,743.12, 2,404.62 and 1,428.84

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Solution

The fourth proportional to 1,743.12, 2,404.62 and 1,428.84 is: 1,971.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,743.12 : 2,404.62 = 1,428.84 : x
  2. Step 2: Convert to fraction form
    1,743.12/2,404.62 = 1,428.84/x
  3. Step 3: Cross multiply
    1,743.12x = 2,404.62 × 1,428.84
  4. Step 4: Simplify right side
    1,743.12x = 3,435,817.24
  5. Step 5: Solve for x
    x = 3,435,817.24/1,743.12
  6. Step 6: Final answer
    x = 1,971.07

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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.