Home / 2,090.43-2,885.51-1,384.20

Finding the Fourth Proportional to 2,090.43, 2,885.51 and 1,384.20

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Solution

The fourth proportional to 2,090.43, 2,885.51 and 1,384.20 is: 1,910.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.43 : 2,885.51 = 1,384.20 : x
  2. Step 2: Convert to fraction form
    2,090.43/2,885.51 = 1,384.20/x
  3. Step 3: Cross multiply
    2,090.43x = 2,885.51 × 1,384.20
  4. Step 4: Simplify right side
    2,090.43x = 3,994,122.94
  5. Step 5: Solve for x
    x = 3,994,122.94/2,090.43
  6. Step 6: Final answer
    x = 1,910.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.