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Finding the Fourth Proportional to 8,941.68, 12,303.36 and 8,712.72

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Solution

The fourth proportional to 8,941.68, 12,303.36 and 8,712.72 is: 11,988.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,941.68 : 12,303.36 = 8,712.72 : x
  2. Step 2: Convert to fraction form
    8,941.68/12,303.36 = 8,712.72/x
  3. Step 3: Cross multiply
    8,941.68x = 12,303.36 × 8,712.72
  4. Step 4: Simplify right side
    8,941.68x = 107,195,730.74
  5. Step 5: Solve for x
    x = 107,195,730.74/8,941.68
  6. Step 6: Final answer
    x = 11,988.32

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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.