Home / 6,627.12-9,129.09-5,679.87

Finding the Fourth Proportional to 6,627.12, 9,129.09 and 5,679.87

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Solution

The fourth proportional to 6,627.12, 9,129.09 and 5,679.87 is: 7,824.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,627.12 : 9,129.09 = 5,679.87 : x
  2. Step 2: Convert to fraction form
    6,627.12/9,129.09 = 5,679.87/x
  3. Step 3: Cross multiply
    6,627.12x = 9,129.09 × 5,679.87
  4. Step 4: Simplify right side
    6,627.12x = 51,852,044.42
  5. Step 5: Solve for x
    x = 51,852,044.42/6,627.12
  6. Step 6: Final answer
    x = 7,824.22

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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.