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Finding the Fourth Proportional to 2,603.34, 3,905.15 and 655.56

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Solution

The fourth proportional to 2,603.34, 3,905.15 and 655.56 is: 983.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,603.34 : 3,905.15 = 655.56 : x
  2. Step 2: Convert to fraction form
    2,603.34/3,905.15 = 655.56/x
  3. Step 3: Cross multiply
    2,603.34x = 3,905.15 × 655.56
  4. Step 4: Simplify right side
    2,603.34x = 2,560,056.86
  5. Step 5: Solve for x
    x = 2,560,056.86/2,603.34
  6. Step 6: Final answer
    x = 983.37

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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.