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Finding the Fourth Proportional to 2,521.64, 3,782.63 and 672.74

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Solution

The fourth proportional to 2,521.64, 3,782.63 and 672.74 is: 1,009.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,521.64 : 3,782.63 = 672.74 : x
  2. Step 2: Convert to fraction form
    2,521.64/3,782.63 = 672.74/x
  3. Step 3: Cross multiply
    2,521.64x = 3,782.63 × 672.74
  4. Step 4: Simplify right side
    2,521.64x = 2,544,704.23
  5. Step 5: Solve for x
    x = 2,544,704.23/2,521.64
  6. Step 6: Final answer
    x = 1,009.15

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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.