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Finding the Fourth Proportional to 2,059.30, 3,089.45 and 672.64

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Solution

The fourth proportional to 2,059.30, 3,089.45 and 672.64 is: 1,009.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,059.30 : 3,089.45 = 672.64 : x
  2. Step 2: Convert to fraction form
    2,059.30/3,089.45 = 672.64/x
  3. Step 3: Cross multiply
    2,059.30x = 3,089.45 × 672.64
  4. Step 4: Simplify right side
    2,059.30x = 2,078,088.15
  5. Step 5: Solve for x
    x = 2,078,088.15/2,059.30
  6. Step 6: Final answer
    x = 1,009.12

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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.