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Finding the Fourth Proportional to 8,648.53, 11,936.25 and 5,290.81

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Solution

The fourth proportional to 8,648.53, 11,936.25 and 5,290.81 is: 7,302.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,648.53 : 11,936.25 = 5,290.81 : x
  2. Step 2: Convert to fraction form
    8,648.53/11,936.25 = 5,290.81/x
  3. Step 3: Cross multiply
    8,648.53x = 11,936.25 × 5,290.81
  4. Step 4: Simplify right side
    8,648.53x = 63,152,430.86
  5. Step 5: Solve for x
    x = 63,152,430.86/8,648.53
  6. Step 6: Final answer
    x = 7,302.10

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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.