Home / 3,120.15-4,678.84-1,170.98

Finding the Fourth Proportional to 3,120.15, 4,678.84 and 1,170.98

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Solution

The fourth proportional to 3,120.15, 4,678.84 and 1,170.98 is: 1,755.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.15 : 4,678.84 = 1,170.98 : x
  2. Step 2: Convert to fraction form
    3,120.15/4,678.84 = 1,170.98/x
  3. Step 3: Cross multiply
    3,120.15x = 4,678.84 × 1,170.98
  4. Step 4: Simplify right side
    3,120.15x = 5,478,798.81
  5. Step 5: Solve for x
    x = 5,478,798.81/3,120.15
  6. Step 6: Final answer
    x = 1,755.94

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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.