Home / 7,139.45-9,852.96-4,115.06

Finding the Fourth Proportional to 7,139.45, 9,852.96 and 4,115.06

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Solution

The fourth proportional to 7,139.45, 9,852.96 and 4,115.06 is: 5,679.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.45 : 9,852.96 = 4,115.06 : x
  2. Step 2: Convert to fraction form
    7,139.45/9,852.96 = 4,115.06/x
  3. Step 3: Cross multiply
    7,139.45x = 9,852.96 × 4,115.06
  4. Step 4: Simplify right side
    7,139.45x = 40,545,524.69
  5. Step 5: Solve for x
    x = 40,545,524.69/7,139.45
  6. Step 6: Final answer
    x = 5,679.08

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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.