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Finding the Fourth Proportional to 8,989.80, 12,417.04 and 6,348.99

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Solution

The fourth proportional to 8,989.80, 12,417.04 and 6,348.99 is: 8,769.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.80 : 12,417.04 = 6,348.99 : x
  2. Step 2: Convert to fraction form
    8,989.80/12,417.04 = 6,348.99/x
  3. Step 3: Cross multiply
    8,989.80x = 12,417.04 × 6,348.99
  4. Step 4: Simplify right side
    8,989.80x = 78,835,662.79
  5. Step 5: Solve for x
    x = 78,835,662.79/8,989.80
  6. Step 6: Final answer
    x = 8,769.46

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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.