Home / 7,039.31-9,714.74-3,895.70

Finding the Fourth Proportional to 7,039.31, 9,714.74 and 3,895.70

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Solution

The fourth proportional to 7,039.31, 9,714.74 and 3,895.70 is: 5,376.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,039.31 : 9,714.74 = 3,895.70 : x
  2. Step 2: Convert to fraction form
    7,039.31/9,714.74 = 3,895.70/x
  3. Step 3: Cross multiply
    7,039.31x = 9,714.74 × 3,895.70
  4. Step 4: Simplify right side
    7,039.31x = 37,845,644.57
  5. Step 5: Solve for x
    x = 37,845,644.57/7,039.31
  6. Step 6: Final answer
    x = 5,376.33

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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.