Home / 1,946.28-2,686.05-1,284.48

Finding the Fourth Proportional to 1,946.28, 2,686.05 and 1,284.48

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Solution

The fourth proportional to 1,946.28, 2,686.05 and 1,284.48 is: 1,772.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946.28 : 2,686.05 = 1,284.48 : x
  2. Step 2: Convert to fraction form
    1,946.28/2,686.05 = 1,284.48/x
  3. Step 3: Cross multiply
    1,946.28x = 2,686.05 × 1,284.48
  4. Step 4: Simplify right side
    1,946.28x = 3,450,177.50
  5. Step 5: Solve for x
    x = 3,450,177.50/1,946.28
  6. Step 6: Final answer
    x = 1,772.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.