Home / 2,742.08-3,783.84-1,563.20

Finding the Fourth Proportional to 2,742.08, 3,783.84 and 1,563.20

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Solution

The fourth proportional to 2,742.08, 3,783.84 and 1,563.20 is: 2,157.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742.08 : 3,783.84 = 1,563.20 : x
  2. Step 2: Convert to fraction form
    2,742.08/3,783.84 = 1,563.20/x
  3. Step 3: Cross multiply
    2,742.08x = 3,783.84 × 1,563.20
  4. Step 4: Simplify right side
    2,742.08x = 5,914,898.69
  5. Step 5: Solve for x
    x = 5,914,898.69/2,742.08
  6. Step 6: Final answer
    x = 2,157.08

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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.