Home / 9,315-13,974.39-4,120.88

Finding the Fourth Proportional to 9,315, 13,974.39 and 4,120.88

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Solution

The fourth proportional to 9,315, 13,974.39 and 4,120.88 is: 6,182.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,315 : 13,974.39 = 4,120.88 : x
  2. Step 2: Convert to fraction form
    9,315/13,974.39 = 4,120.88/x
  3. Step 3: Cross multiply
    9,315x = 13,974.39 × 4,120.88
  4. Step 4: Simplify right side
    9,315x = 57,586,714.39
  5. Step 5: Solve for x
    x = 57,586,714.39/9,315
  6. Step 6: Final answer
    x = 6,182.15

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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.