Home / 8,989.56-12,416.67-6,348.75

Finding the Fourth Proportional to 8,989.56, 12,416.67 and 6,348.75

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Solution

The fourth proportional to 8,989.56, 12,416.67 and 6,348.75 is: 8,769.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.56 : 12,416.67 = 6,348.75 : x
  2. Step 2: Convert to fraction form
    8,989.56/12,416.67 = 6,348.75/x
  3. Step 3: Cross multiply
    8,989.56x = 12,416.67 × 6,348.75
  4. Step 4: Simplify right side
    8,989.56x = 78,830,333.66
  5. Step 5: Solve for x
    x = 78,830,333.66/8,989.56
  6. Step 6: Final answer
    x = 8,769.10

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Half scale
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Double scale
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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.