Home / 2,538.30-3,805.02-1,239.06

Finding the Fourth Proportional to 2,538.30, 3,805.02 and 1,239.06

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Solution

The fourth proportional to 2,538.30, 3,805.02 and 1,239.06 is: 1,857.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,538.30 : 3,805.02 = 1,239.06 : x
  2. Step 2: Convert to fraction form
    2,538.30/3,805.02 = 1,239.06/x
  3. Step 3: Cross multiply
    2,538.30x = 3,805.02 × 1,239.06
  4. Step 4: Simplify right side
    2,538.30x = 4,714,648.08
  5. Step 5: Solve for x
    x = 4,714,648.08/2,538.30
  6. Step 6: Final answer
    x = 1,857.40

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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.