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Finding the Fourth Proportional to 9,770.78, 13,483.64 and 5,294.40

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Solution

The fourth proportional to 9,770.78, 13,483.64 and 5,294.40 is: 7,306.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,770.78 : 13,483.64 = 5,294.40 : x
  2. Step 2: Convert to fraction form
    9,770.78/13,483.64 = 5,294.40/x
  3. Step 3: Cross multiply
    9,770.78x = 13,483.64 × 5,294.40
  4. Step 4: Simplify right side
    9,770.78x = 71,387,783.62
  5. Step 5: Solve for x
    x = 71,387,783.62/9,770.78
  6. Step 6: Final answer
    x = 7,306.25

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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.