Home / 1,618.03-2,232.24-909.71

Finding the Fourth Proportional to 1,618.03, 2,232.24 and 909.71

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Solution

The fourth proportional to 1,618.03, 2,232.24 and 909.71 is: 1,255.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,618.03 : 2,232.24 = 909.71 : x
  2. Step 2: Convert to fraction form
    1,618.03/2,232.24 = 909.71/x
  3. Step 3: Cross multiply
    1,618.03x = 2,232.24 × 909.71
  4. Step 4: Simplify right side
    1,618.03x = 2,030,679.89
  5. Step 5: Solve for x
    x = 2,030,679.89/1,618.03
  6. Step 6: Final answer
    x = 1,255.03

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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.