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Finding the Fourth Proportional to 8,565.76, 11,820.16 and 4,788.72

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Solution

The fourth proportional to 8,565.76, 11,820.16 and 4,788.72 is: 6,608.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,565.76 : 11,820.16 = 4,788.72 : x
  2. Step 2: Convert to fraction form
    8,565.76/11,820.16 = 4,788.72/x
  3. Step 3: Cross multiply
    8,565.76x = 11,820.16 × 4,788.72
  4. Step 4: Simplify right side
    8,565.76x = 56,603,436.60
  5. Step 5: Solve for x
    x = 56,603,436.60/8,565.76
  6. Step 6: Final answer
    x = 6,608.10

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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.