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Finding the Fourth Proportional to 1,672.42, 2,307.52 and 1,074.64

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Solution

The fourth proportional to 1,672.42, 2,307.52 and 1,074.64 is: 1,482.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,672.42 : 2,307.52 = 1,074.64 : x
  2. Step 2: Convert to fraction form
    1,672.42/2,307.52 = 1,074.64/x
  3. Step 3: Cross multiply
    1,672.42x = 2,307.52 × 1,074.64
  4. Step 4: Simplify right side
    1,672.42x = 2,479,753.29
  5. Step 5: Solve for x
    x = 2,479,753.29/1,672.42
  6. Step 6: Final answer
    x = 1,482.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.