Home / 7,715.11-11,571.19-3,762.40

Finding the Fourth Proportional to 7,715.11, 11,571.19 and 3,762.40

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Solution

The fourth proportional to 7,715.11, 11,571.19 and 3,762.40 is: 5,642.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.11 : 11,571.19 = 3,762.40 : x
  2. Step 2: Convert to fraction form
    7,715.11/11,571.19 = 3,762.40/x
  3. Step 3: Cross multiply
    7,715.11x = 11,571.19 × 3,762.40
  4. Step 4: Simplify right side
    7,715.11x = 43,535,445.26
  5. Step 5: Solve for x
    x = 43,535,445.26/7,715.11
  6. Step 6: Final answer
    x = 5,642.88

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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.