Home / 1,518.81-2,277.41-786.57

Finding the Fourth Proportional to 1,518.81, 2,277.41 and 786.57

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Solution

The fourth proportional to 1,518.81, 2,277.41 and 786.57 is: 1,179.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.81 : 2,277.41 = 786.57 : x
  2. Step 2: Convert to fraction form
    1,518.81/2,277.41 = 786.57/x
  3. Step 3: Cross multiply
    1,518.81x = 2,277.41 × 786.57
  4. Step 4: Simplify right side
    1,518.81x = 1,791,338.45
  5. Step 5: Solve for x
    x = 1,791,338.45/1,518.81
  6. Step 6: Final answer
    x = 1,179.44

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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.