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Finding the Fourth Proportional to 8,886.62, 12,255.62 and 5,739.50

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Solution

The fourth proportional to 8,886.62, 12,255.62 and 5,739.50 is: 7,915.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,886.62 : 12,255.62 = 5,739.50 : x
  2. Step 2: Convert to fraction form
    8,886.62/12,255.62 = 5,739.50/x
  3. Step 3: Cross multiply
    8,886.62x = 12,255.62 × 5,739.50
  4. Step 4: Simplify right side
    8,886.62x = 70,341,130.99
  5. Step 5: Solve for x
    x = 70,341,130.99/8,886.62
  6. Step 6: Final answer
    x = 7,915.40

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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.