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Finding the Fourth Proportional to 7,039.32, 9,714.76 and 3,895.44

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Solution

The fourth proportional to 7,039.32, 9,714.76 and 3,895.44 is: 5,375.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,039.32 : 9,714.76 = 3,895.44 : x
  2. Step 2: Convert to fraction form
    7,039.32/9,714.76 = 3,895.44/x
  3. Step 3: Cross multiply
    7,039.32x = 9,714.76 × 3,895.44
  4. Step 4: Simplify right side
    7,039.32x = 37,843,264.69
  5. Step 5: Solve for x
    x = 37,843,264.69/7,039.32
  6. Step 6: Final answer
    x = 5,375.98

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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.