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Finding the Fourth Proportional to 7,492.78, 11,239.23 and 4,912.06

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Solution

The fourth proportional to 7,492.78, 11,239.23 and 4,912.06 is: 7,368.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,492.78 : 11,239.23 = 4,912.06 : x
  2. Step 2: Convert to fraction form
    7,492.78/11,239.23 = 4,912.06/x
  3. Step 3: Cross multiply
    7,492.78x = 11,239.23 × 4,912.06
  4. Step 4: Simplify right side
    7,492.78x = 55,207,772.11
  5. Step 5: Solve for x
    x = 55,207,772.11/7,492.78
  6. Step 6: Final answer
    x = 7,368.13

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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.