Home / 1,384.60-2,076.90-1,370.20

Finding the Fourth Proportional to 1,384.60, 2,076.90 and 1,370.20

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Solution

The fourth proportional to 1,384.60, 2,076.90 and 1,370.20 is: 2,055.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384.60 : 2,076.90 = 1,370.20 : x
  2. Step 2: Convert to fraction form
    1,384.60/2,076.90 = 1,370.20/x
  3. Step 3: Cross multiply
    1,384.60x = 2,076.90 × 1,370.20
  4. Step 4: Simplify right side
    1,384.60x = 2,845,768.38
  5. Step 5: Solve for x
    x = 2,845,768.38/1,384.60
  6. Step 6: Final answer
    x = 2,055.30

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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.