Home / 7,570.47-11,357.55-2,640.15

Finding the Fourth Proportional to 7,570.47, 11,357.55 and 2,640.15

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Solution

The fourth proportional to 7,570.47, 11,357.55 and 2,640.15 is: 3,960.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,570.47 : 11,357.55 = 2,640.15 : x
  2. Step 2: Convert to fraction form
    7,570.47/11,357.55 = 2,640.15/x
  3. Step 3: Cross multiply
    7,570.47x = 11,357.55 × 2,640.15
  4. Step 4: Simplify right side
    7,570.47x = 29,985,635.63
  5. Step 5: Solve for x
    x = 29,985,635.63/7,570.47
  6. Step 6: Final answer
    x = 3,960.87

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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.