Home / 2,881.12-4,313.40-2,000.80

Finding the Fourth Proportional to 2,881.12, 4,313.40 and 2,000.80

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Solution

The fourth proportional to 2,881.12, 4,313.40 and 2,000.80 is: 2,995.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,881.12 : 4,313.40 = 2,000.80 : x
  2. Step 2: Convert to fraction form
    2,881.12/4,313.40 = 2,000.80/x
  3. Step 3: Cross multiply
    2,881.12x = 4,313.40 × 2,000.80
  4. Step 4: Simplify right side
    2,881.12x = 8,630,250.72
  5. Step 5: Solve for x
    x = 8,630,250.72/2,881.12
  6. Step 6: Final answer
    x = 2,995.45

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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.