Home / 8,763.70-12,090.80-5,621.62

Finding the Fourth Proportional to 8,763.70, 12,090.80 and 5,621.62

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Solution

The fourth proportional to 8,763.70, 12,090.80 and 5,621.62 is: 7,755.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,763.70 : 12,090.80 = 5,621.62 : x
  2. Step 2: Convert to fraction form
    8,763.70/12,090.80 = 5,621.62/x
  3. Step 3: Cross multiply
    8,763.70x = 12,090.80 × 5,621.62
  4. Step 4: Simplify right side
    8,763.70x = 67,969,883.10
  5. Step 5: Solve for x
    x = 67,969,883.10/8,763.70
  6. Step 6: Final answer
    x = 7,755.84

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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.