Home / 2,487.84-3,728.40-2,020.38

Finding the Fourth Proportional to 2,487.84, 3,728.40 and 2,020.38

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Solution

The fourth proportional to 2,487.84, 3,728.40 and 2,020.38 is: 3,027.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.84 : 3,728.40 = 2,020.38 : x
  2. Step 2: Convert to fraction form
    2,487.84/3,728.40 = 2,020.38/x
  3. Step 3: Cross multiply
    2,487.84x = 3,728.40 × 2,020.38
  4. Step 4: Simplify right side
    2,487.84x = 7,532,784.79
  5. Step 5: Solve for x
    x = 7,532,784.79/2,487.84
  6. Step 6: Final answer
    x = 3,027.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.