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Finding the Fourth Proportional to 5,269.78, 7,903.23 and 1,981.08

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Solution

The fourth proportional to 5,269.78, 7,903.23 and 1,981.08 is: 2,971.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,269.78 : 7,903.23 = 1,981.08 : x
  2. Step 2: Convert to fraction form
    5,269.78/7,903.23 = 1,981.08/x
  3. Step 3: Cross multiply
    5,269.78x = 7,903.23 × 1,981.08
  4. Step 4: Simplify right side
    5,269.78x = 15,656,930.89
  5. Step 5: Solve for x
    x = 15,656,930.89/5,269.78
  6. Step 6: Final answer
    x = 2,971.08

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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.