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Finding the Fourth Proportional to 8,364.60, 11,543.22 and 5,381.40

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Solution

The fourth proportional to 8,364.60, 11,543.22 and 5,381.40 is: 7,426.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,364.60 : 11,543.22 = 5,381.40 : x
  2. Step 2: Convert to fraction form
    8,364.60/11,543.22 = 5,381.40/x
  3. Step 3: Cross multiply
    8,364.60x = 11,543.22 × 5,381.40
  4. Step 4: Simplify right side
    8,364.60x = 62,118,684.11
  5. Step 5: Solve for x
    x = 62,118,684.11/8,364.60
  6. Step 6: Final answer
    x = 7,426.38

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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.