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Finding the Fourth Proportional to 7,437.88, 11,156.82 and 2,820.88

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Solution

The fourth proportional to 7,437.88, 11,156.82 and 2,820.88 is: 4,231.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,437.88 : 11,156.82 = 2,820.88 : x
  2. Step 2: Convert to fraction form
    7,437.88/11,156.82 = 2,820.88/x
  3. Step 3: Cross multiply
    7,437.88x = 11,156.82 × 2,820.88
  4. Step 4: Simplify right side
    7,437.88x = 31,471,980.51
  5. Step 5: Solve for x
    x = 31,471,980.51/7,437.88
  6. Step 6: Final answer
    x = 4,231.31

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Similar ratio
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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.