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Finding the Fourth Proportional to 7,603.20, 11,366.40 and 7,526.40

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Solution

The fourth proportional to 7,603.20, 11,366.40 and 7,526.40 is: 11,251.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,603.20 : 11,366.40 = 7,526.40 : x
  2. Step 2: Convert to fraction form
    7,603.20/11,366.40 = 7,526.40/x
  3. Step 3: Cross multiply
    7,603.20x = 11,366.40 × 7,526.40
  4. Step 4: Simplify right side
    7,603.20x = 85,548,072.96
  5. Step 5: Solve for x
    x = 85,548,072.96/7,603.20
  6. Step 6: Final answer
    x = 11,251.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.