Home / 1,362.28-1,890.25-1,307.44

Finding the Fourth Proportional to 1,362.28, 1,890.25 and 1,307.44

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Solution

The fourth proportional to 1,362.28, 1,890.25 and 1,307.44 is: 1,814.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,362.28 : 1,890.25 = 1,307.44 : x
  2. Step 2: Convert to fraction form
    1,362.28/1,890.25 = 1,307.44/x
  3. Step 3: Cross multiply
    1,362.28x = 1,890.25 × 1,307.44
  4. Step 4: Simplify right side
    1,362.28x = 2,471,388.46
  5. Step 5: Solve for x
    x = 2,471,388.46/1,362.28
  6. Step 6: Final answer
    x = 1,814.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.