Home / 4,172.77-6,259.83-1,980.30

Finding the Fourth Proportional to 4,172.77, 6,259.83 and 1,980.30

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Solution

The fourth proportional to 4,172.77, 6,259.83 and 1,980.30 is: 2,970.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,172.77 : 6,259.83 = 1,980.30 : x
  2. Step 2: Convert to fraction form
    4,172.77/6,259.83 = 1,980.30/x
  3. Step 3: Cross multiply
    4,172.77x = 6,259.83 × 1,980.30
  4. Step 4: Simplify right side
    4,172.77x = 12,396,331.45
  5. Step 5: Solve for x
    x = 12,396,331.45/4,172.77
  6. Step 6: Final answer
    x = 2,970.77

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1.5x scale

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.