Home / 8,985.79-12,373.60-8,786.64

Finding the Fourth Proportional to 8,985.79, 12,373.60 and 8,786.64

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Solution

The fourth proportional to 8,985.79, 12,373.60 and 8,786.64 is: 12,099.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.79 : 12,373.60 = 8,786.64 : x
  2. Step 2: Convert to fraction form
    8,985.79/12,373.60 = 8,786.64/x
  3. Step 3: Cross multiply
    8,985.79x = 12,373.60 × 8,786.64
  4. Step 4: Simplify right side
    8,985.79x = 108,722,368.70
  5. Step 5: Solve for x
    x = 108,722,368.70/8,985.79
  6. Step 6: Final answer
    x = 12,099.37

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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.