Home / 3,168.60-4,752.90-1,320.05

Finding the Fourth Proportional to 3,168.60, 4,752.90 and 1,320.05

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Solution

The fourth proportional to 3,168.60, 4,752.90 and 1,320.05 is: 1,980.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,168.60 : 4,752.90 = 1,320.05 : x
  2. Step 2: Convert to fraction form
    3,168.60/4,752.90 = 1,320.05/x
  3. Step 3: Cross multiply
    3,168.60x = 4,752.90 × 1,320.05
  4. Step 4: Simplify right side
    3,168.60x = 6,274,041.88
  5. Step 5: Solve for x
    x = 6,274,041.88/3,168.60
  6. Step 6: Final answer
    x = 1,980.07

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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.