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Finding the Fourth Proportional to 8,963.76, 12,370.18 and 4,984.80

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Solution

The fourth proportional to 8,963.76, 12,370.18 and 4,984.80 is: 6,879.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,963.76 : 12,370.18 = 4,984.80 : x
  2. Step 2: Convert to fraction form
    8,963.76/12,370.18 = 4,984.80/x
  3. Step 3: Cross multiply
    8,963.76x = 12,370.18 × 4,984.80
  4. Step 4: Simplify right side
    8,963.76x = 61,662,873.26
  5. Step 5: Solve for x
    x = 61,662,873.26/8,963.76
  6. Step 6: Final answer
    x = 6,879.13

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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.