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Finding the Fourth Proportional to 8,765.74, 12,104.81 and 5,627.40

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Solution

The fourth proportional to 8,765.74, 12,104.81 and 5,627.40 is: 7,771.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,765.74 : 12,104.81 = 5,627.40 : x
  2. Step 2: Convert to fraction form
    8,765.74/12,104.81 = 5,627.40/x
  3. Step 3: Cross multiply
    8,765.74x = 12,104.81 × 5,627.40
  4. Step 4: Simplify right side
    8,765.74x = 68,118,607.79
  5. Step 5: Solve for x
    x = 68,118,607.79/8,765.74
  6. Step 6: Final answer
    x = 7,771.00

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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.