Home / 1,384.20-2,066.31-1,282.86

Finding the Fourth Proportional to 1,384.20, 2,066.31 and 1,282.86

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Solution

The fourth proportional to 1,384.20, 2,066.31 and 1,282.86 is: 1,915.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384.20 : 2,066.31 = 1,282.86 : x
  2. Step 2: Convert to fraction form
    1,384.20/2,066.31 = 1,282.86/x
  3. Step 3: Cross multiply
    1,384.20x = 2,066.31 × 1,282.86
  4. Step 4: Simplify right side
    1,384.20x = 2,650,786.45
  5. Step 5: Solve for x
    x = 2,650,786.45/1,384.20
  6. Step 6: Final answer
    x = 1,915.03

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1.5x scale

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.