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Finding the Fourth Proportional to 7,194.78, 9,928.17 and 5,307.39

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Solution

The fourth proportional to 7,194.78, 9,928.17 and 5,307.39 is: 7,323.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,194.78 : 9,928.17 = 5,307.39 : x
  2. Step 2: Convert to fraction form
    7,194.78/9,928.17 = 5,307.39/x
  3. Step 3: Cross multiply
    7,194.78x = 9,928.17 × 5,307.39
  4. Step 4: Simplify right side
    7,194.78x = 52,692,670.18
  5. Step 5: Solve for x
    x = 52,692,670.18/7,194.78
  6. Step 6: Final answer
    x = 7,323.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.