Home / 1,478.72-2,202.58-1,403.84

Finding the Fourth Proportional to 1,478.72, 2,202.58 and 1,403.84

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Solution

The fourth proportional to 1,478.72, 2,202.58 and 1,403.84 is: 2,091.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478.72 : 2,202.58 = 1,403.84 : x
  2. Step 2: Convert to fraction form
    1,478.72/2,202.58 = 1,403.84/x
  3. Step 3: Cross multiply
    1,478.72x = 2,202.58 × 1,403.84
  4. Step 4: Simplify right side
    1,478.72x = 3,092,069.91
  5. Step 5: Solve for x
    x = 3,092,069.91/1,478.72
  6. Step 6: Final answer
    x = 2,091.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.