Home / 1,965.80-2,948.70-1,927.40

Finding the Fourth Proportional to 1,965.80, 2,948.70 and 1,927.40

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Solution

The fourth proportional to 1,965.80, 2,948.70 and 1,927.40 is: 2,891.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965.80 : 2,948.70 = 1,927.40 : x
  2. Step 2: Convert to fraction form
    1,965.80/2,948.70 = 1,927.40/x
  3. Step 3: Cross multiply
    1,965.80x = 2,948.70 × 1,927.40
  4. Step 4: Simplify right side
    1,965.80x = 5,683,324.38
  5. Step 5: Solve for x
    x = 5,683,324.38/1,965.80
  6. Step 6: Final answer
    x = 2,891.10

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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.