Home / 1,271.07-1,903.84-1,240.09

Finding the Fourth Proportional to 1,271.07, 1,903.84 and 1,240.09

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Solution

The fourth proportional to 1,271.07, 1,903.84 and 1,240.09 is: 1,857.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271.07 : 1,903.84 = 1,240.09 : x
  2. Step 2: Convert to fraction form
    1,271.07/1,903.84 = 1,240.09/x
  3. Step 3: Cross multiply
    1,271.07x = 1,903.84 × 1,240.09
  4. Step 4: Simplify right side
    1,271.07x = 2,360,932.95
  5. Step 5: Solve for x
    x = 2,360,932.95/1,271.07
  6. Step 6: Final answer
    x = 1,857.44

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1.5x scale

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.