Home / 3,120.45-4,666.91-2,776.20

Finding the Fourth Proportional to 3,120.45, 4,666.91 and 2,776.20

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Solution

The fourth proportional to 3,120.45, 4,666.91 and 2,776.20 is: 4,152.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.45 : 4,666.91 = 2,776.20 : x
  2. Step 2: Convert to fraction form
    3,120.45/4,666.91 = 2,776.20/x
  3. Step 3: Cross multiply
    3,120.45x = 4,666.91 × 2,776.20
  4. Step 4: Simplify right side
    3,120.45x = 12,956,261.66
  5. Step 5: Solve for x
    x = 12,956,261.66/3,120.45
  6. Step 6: Final answer
    x = 4,152.05

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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.