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Finding the Fourth Proportional to 8,718.76, 12,031.48 and 4,941.70

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Solution

The fourth proportional to 8,718.76, 12,031.48 and 4,941.70 is: 6,819.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,718.76 : 12,031.48 = 4,941.70 : x
  2. Step 2: Convert to fraction form
    8,718.76/12,031.48 = 4,941.70/x
  3. Step 3: Cross multiply
    8,718.76x = 12,031.48 × 4,941.70
  4. Step 4: Simplify right side
    8,718.76x = 59,455,964.72
  5. Step 5: Solve for x
    x = 59,455,964.72/8,718.76
  6. Step 6: Final answer
    x = 6,819.31

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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.