Home / 2,742.57-3,784.75-1,563.65

Finding the Fourth Proportional to 2,742.57, 3,784.75 and 1,563.65

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Solution

The fourth proportional to 2,742.57, 3,784.75 and 1,563.65 is: 2,157.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742.57 : 3,784.75 = 1,563.65 : x
  2. Step 2: Convert to fraction form
    2,742.57/3,784.75 = 1,563.65/x
  3. Step 3: Cross multiply
    2,742.57x = 3,784.75 × 1,563.65
  4. Step 4: Simplify right side
    2,742.57x = 5,918,024.34
  5. Step 5: Solve for x
    x = 5,918,024.34/2,742.57
  6. Step 6: Final answer
    x = 2,157.84

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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.