Home / 2,742.13-3,783.90-1,623.10

Finding the Fourth Proportional to 2,742.13, 3,783.90 and 1,623.10

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Solution

The fourth proportional to 2,742.13, 3,783.90 and 1,623.10 is: 2,239.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742.13 : 3,783.90 = 1,623.10 : x
  2. Step 2: Convert to fraction form
    2,742.13/3,783.90 = 1,623.10/x
  3. Step 3: Cross multiply
    2,742.13x = 3,783.90 × 1,623.10
  4. Step 4: Simplify right side
    2,742.13x = 6,141,648.09
  5. Step 5: Solve for x
    x = 6,141,648.09/2,742.13
  6. Step 6: Final answer
    x = 2,239.74

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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.