Home / 1,742.14-2,613.81-768.32

Finding the Fourth Proportional to 1,742.14, 2,613.81 and 768.32

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Solution

The fourth proportional to 1,742.14, 2,613.81 and 768.32 is: 1,152.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,742.14 : 2,613.81 = 768.32 : x
  2. Step 2: Convert to fraction form
    1,742.14/2,613.81 = 768.32/x
  3. Step 3: Cross multiply
    1,742.14x = 2,613.81 × 768.32
  4. Step 4: Simplify right side
    1,742.14x = 2,008,242.50
  5. Step 5: Solve for x
    x = 2,008,242.50/1,742.14
  6. Step 6: Final answer
    x = 1,152.75

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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.