Home / 7,617.90-11,419.56-3,720.18

Finding the Fourth Proportional to 7,617.90, 11,419.56 and 3,720.18

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Solution

The fourth proportional to 7,617.90, 11,419.56 and 3,720.18 is: 5,576.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,617.90 : 11,419.56 = 3,720.18 : x
  2. Step 2: Convert to fraction form
    7,617.90/11,419.56 = 3,720.18/x
  3. Step 3: Cross multiply
    7,617.90x = 11,419.56 × 3,720.18
  4. Step 4: Simplify right side
    7,617.90x = 42,482,818.72
  5. Step 5: Solve for x
    x = 42,482,818.72/7,617.90
  6. Step 6: Final answer
    x = 5,576.71

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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.