Home / 9,139.46-13,714.86-4,209.80

Finding the Fourth Proportional to 9,139.46, 13,714.86 and 4,209.80

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Solution

The fourth proportional to 9,139.46, 13,714.86 and 4,209.80 is: 6,317.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,139.46 : 13,714.86 = 4,209.80 : x
  2. Step 2: Convert to fraction form
    9,139.46/13,714.86 = 4,209.80/x
  3. Step 3: Cross multiply
    9,139.46x = 13,714.86 × 4,209.80
  4. Step 4: Simplify right side
    9,139.46x = 57,736,817.63
  5. Step 5: Solve for x
    x = 57,736,817.63/9,139.46
  6. Step 6: Final answer
    x = 6,317.31

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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.