Home / 8,070.40-11,137.20-4,485.12

Finding the Fourth Proportional to 8,070.40, 11,137.20 and 4,485.12

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Solution

The fourth proportional to 8,070.40, 11,137.20 and 4,485.12 is: 6,189.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,070.40 : 11,137.20 = 4,485.12 : x
  2. Step 2: Convert to fraction form
    8,070.40/11,137.20 = 4,485.12/x
  3. Step 3: Cross multiply
    8,070.40x = 11,137.20 × 4,485.12
  4. Step 4: Simplify right side
    8,070.40x = 49,951,678.46
  5. Step 5: Solve for x
    x = 49,951,678.46/8,070.40
  6. Step 6: Final answer
    x = 6,189.49

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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.