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Finding the Fourth Proportional to 8,365.96, 11,541.78 and 5,381.40

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Solution

The fourth proportional to 8,365.96, 11,541.78 and 5,381.40 is: 7,424.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,365.96 : 11,541.78 = 5,381.40 : x
  2. Step 2: Convert to fraction form
    8,365.96/11,541.78 = 5,381.40/x
  3. Step 3: Cross multiply
    8,365.96x = 11,541.78 × 5,381.40
  4. Step 4: Simplify right side
    8,365.96x = 62,110,934.89
  5. Step 5: Solve for x
    x = 62,110,934.89/8,365.96
  6. Step 6: Final answer
    x = 7,424.24

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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.