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Finding the Fourth Proportional to 7,603.40, 11,412.30 and 4,687.40

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Solution

The fourth proportional to 7,603.40, 11,412.30 and 4,687.40 is: 7,035.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,603.40 : 11,412.30 = 4,687.40 : x
  2. Step 2: Convert to fraction form
    7,603.40/11,412.30 = 4,687.40/x
  3. Step 3: Cross multiply
    7,603.40x = 11,412.30 × 4,687.40
  4. Step 4: Simplify right side
    7,603.40x = 53,494,015.02
  5. Step 5: Solve for x
    x = 53,494,015.02/7,603.40
  6. Step 6: Final answer
    x = 7,035.54

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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.