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Finding the Fourth Proportional to 7,637.12, 11,364.22 and 7,611.20

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Solution

The fourth proportional to 7,637.12, 11,364.22 and 7,611.20 is: 11,325.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,637.12 : 11,364.22 = 7,611.20 : x
  2. Step 2: Convert to fraction form
    7,637.12/11,364.22 = 7,611.20/x
  3. Step 3: Cross multiply
    7,637.12x = 11,364.22 × 7,611.20
  4. Step 4: Simplify right side
    7,637.12x = 86,495,351.26
  5. Step 5: Solve for x
    x = 86,495,351.26/7,637.12
  6. Step 6: Final answer
    x = 11,325.65

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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.