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Finding the Fourth Proportional to 2,405.08, 3,607.59 and 761.63

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Solution

The fourth proportional to 2,405.08, 3,607.59 and 761.63 is: 1,142.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.08 : 3,607.59 = 761.63 : x
  2. Step 2: Convert to fraction form
    2,405.08/3,607.59 = 761.63/x
  3. Step 3: Cross multiply
    2,405.08x = 3,607.59 × 761.63
  4. Step 4: Simplify right side
    2,405.08x = 2,747,648.77
  5. Step 5: Solve for x
    x = 2,747,648.77/2,405.08
  6. Step 6: Final answer
    x = 1,142.44

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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.