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Finding the Fourth Proportional to 6,240.78, 8,605.65 and 5,437.22

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Solution

The fourth proportional to 6,240.78, 8,605.65 and 5,437.22 is: 7,497.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,240.78 : 8,605.65 = 5,437.22 : x
  2. Step 2: Convert to fraction form
    6,240.78/8,605.65 = 5,437.22/x
  3. Step 3: Cross multiply
    6,240.78x = 8,605.65 × 5,437.22
  4. Step 4: Simplify right side
    6,240.78x = 46,790,769.26
  5. Step 5: Solve for x
    x = 46,790,769.26/6,240.78
  6. Step 6: Final answer
    x = 7,497.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.