Home / 6,147.13-8,479.72-5,078.58

Finding the Fourth Proportional to 6,147.13, 8,479.72 and 5,078.58

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Solution

The fourth proportional to 6,147.13, 8,479.72 and 5,078.58 is: 7,005.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,147.13 : 8,479.72 = 5,078.58 : x
  2. Step 2: Convert to fraction form
    6,147.13/8,479.72 = 5,078.58/x
  3. Step 3: Cross multiply
    6,147.13x = 8,479.72 × 5,078.58
  4. Step 4: Simplify right side
    6,147.13x = 43,064,936.40
  5. Step 5: Solve for x
    x = 43,064,936.40/6,147.13
  6. Step 6: Final answer
    x = 7,005.70

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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.