Home / 8,140.49-12,210.70-3,459.77

Finding the Fourth Proportional to 8,140.49, 12,210.70 and 3,459.77

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Solution

The fourth proportional to 8,140.49, 12,210.70 and 3,459.77 is: 5,189.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.49 : 12,210.70 = 3,459.77 : x
  2. Step 2: Convert to fraction form
    8,140.49/12,210.70 = 3,459.77/x
  3. Step 3: Cross multiply
    8,140.49x = 12,210.70 × 3,459.77
  4. Step 4: Simplify right side
    8,140.49x = 42,246,213.54
  5. Step 5: Solve for x
    x = 42,246,213.54/8,140.49
  6. Step 6: Final answer
    x = 5,189.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.