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Finding the Fourth Proportional to 7,637.95, 11,439.16 and 7,427.75

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Solution

The fourth proportional to 7,637.95, 11,439.16 and 7,427.75 is: 11,124.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,637.95 : 11,439.16 = 7,427.75 : x
  2. Step 2: Convert to fraction form
    7,637.95/11,439.16 = 7,427.75/x
  3. Step 3: Cross multiply
    7,637.95x = 11,439.16 × 7,427.75
  4. Step 4: Simplify right side
    7,637.95x = 84,967,144.92
  5. Step 5: Solve for x
    x = 84,967,144.92/7,637.95
  6. Step 6: Final answer
    x = 11,124.34

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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.