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Finding the Fourth Proportional to 8,712.16, 12,027.80 and 5,733.12

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Solution

The fourth proportional to 8,712.16, 12,027.80 and 5,733.12 is: 7,915.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.16 : 12,027.80 = 5,733.12 : x
  2. Step 2: Convert to fraction form
    8,712.16/12,027.80 = 5,733.12/x
  3. Step 3: Cross multiply
    8,712.16x = 12,027.80 × 5,733.12
  4. Step 4: Simplify right side
    8,712.16x = 68,956,820.74
  5. Step 5: Solve for x
    x = 68,956,820.74/8,712.16
  6. Step 6: Final answer
    x = 7,915.01

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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.