Home / 7,139.45-10,658.07-6,205.53

Finding the Fourth Proportional to 7,139.45, 10,658.07 and 6,205.53

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Solution

The fourth proportional to 7,139.45, 10,658.07 and 6,205.53 is: 9,263.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.45 : 10,658.07 = 6,205.53 : x
  2. Step 2: Convert to fraction form
    7,139.45/10,658.07 = 6,205.53/x
  3. Step 3: Cross multiply
    7,139.45x = 10,658.07 × 6,205.53
  4. Step 4: Simplify right side
    7,139.45x = 66,139,013.09
  5. Step 5: Solve for x
    x = 66,139,013.09/7,139.45
  6. Step 6: Final answer
    x = 9,263.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.