Home / 2,086.60-3,127.64-1,356.70

Finding the Fourth Proportional to 2,086.60, 3,127.64 and 1,356.70

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Solution

The fourth proportional to 2,086.60, 3,127.64 and 1,356.70 is: 2,033.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,086.60 : 3,127.64 = 1,356.70 : x
  2. Step 2: Convert to fraction form
    2,086.60/3,127.64 = 1,356.70/x
  3. Step 3: Cross multiply
    2,086.60x = 3,127.64 × 1,356.70
  4. Step 4: Simplify right side
    2,086.60x = 4,243,269.19
  5. Step 5: Solve for x
    x = 4,243,269.19/2,086.60
  6. Step 6: Final answer
    x = 2,033.58

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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.