Home / 1,673.55-2,306.91-1,378.30

Finding the Fourth Proportional to 1,673.55, 2,306.91 and 1,378.30

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Solution

The fourth proportional to 1,673.55, 2,306.91 and 1,378.30 is: 1,899.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,673.55 : 2,306.91 = 1,378.30 : x
  2. Step 2: Convert to fraction form
    1,673.55/2,306.91 = 1,378.30/x
  3. Step 3: Cross multiply
    1,673.55x = 2,306.91 × 1,378.30
  4. Step 4: Simplify right side
    1,673.55x = 3,179,614.05
  5. Step 5: Solve for x
    x = 3,179,614.05/1,673.55
  6. Step 6: Final answer
    x = 1,899.92

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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.