Home / 7,561.28-11,345.76-3,400.45

Finding the Fourth Proportional to 7,561.28, 11,345.76 and 3,400.45

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Solution

The fourth proportional to 7,561.28, 11,345.76 and 3,400.45 is: 5,102.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,561.28 : 11,345.76 = 3,400.45 : x
  2. Step 2: Convert to fraction form
    7,561.28/11,345.76 = 3,400.45/x
  3. Step 3: Cross multiply
    7,561.28x = 11,345.76 × 3,400.45
  4. Step 4: Simplify right side
    7,561.28x = 38,580,661.23
  5. Step 5: Solve for x
    x = 38,580,661.23/7,561.28
  6. Step 6: Final answer
    x = 5,102.40

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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.