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Finding the Fourth Proportional to 5,612.73, 8,421.53 and 3,012.63

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Solution

The fourth proportional to 5,612.73, 8,421.53 and 3,012.63 is: 4,520.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,612.73 : 8,421.53 = 3,012.63 : x
  2. Step 2: Convert to fraction form
    5,612.73/8,421.53 = 3,012.63/x
  3. Step 3: Cross multiply
    5,612.73x = 8,421.53 × 3,012.63
  4. Step 4: Simplify right side
    5,612.73x = 25,370,953.92
  5. Step 5: Solve for x
    x = 25,370,953.92/5,612.73
  6. Step 6: Final answer
    x = 4,520.25

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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.