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Finding the Fourth Proportional to 9,884.94, 13,641.10 and 5,408.63

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Solution

The fourth proportional to 9,884.94, 13,641.10 and 5,408.63 is: 7,463.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,884.94 : 13,641.10 = 5,408.63 : x
  2. Step 2: Convert to fraction form
    9,884.94/13,641.10 = 5,408.63/x
  3. Step 3: Cross multiply
    9,884.94x = 13,641.10 × 5,408.63
  4. Step 4: Simplify right side
    9,884.94x = 73,779,683.27
  5. Step 5: Solve for x
    x = 73,779,683.27/9,884.94
  6. Step 6: Final answer
    x = 7,463.85

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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.