Home / 3,515.13-5,272.60-918.07

Finding the Fourth Proportional to 3,515.13, 5,272.60 and 918.07

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Solution

The fourth proportional to 3,515.13, 5,272.60 and 918.07 is: 1,377.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515.13 : 5,272.60 = 918.07 : x
  2. Step 2: Convert to fraction form
    3,515.13/5,272.60 = 918.07/x
  3. Step 3: Cross multiply
    3,515.13x = 5,272.60 × 918.07
  4. Step 4: Simplify right side
    3,515.13x = 4,840,615.88
  5. Step 5: Solve for x
    x = 4,840,615.88/3,515.13
  6. Step 6: Final answer
    x = 1,377.08

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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.