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Finding the Fourth Proportional to 7,139.59, 10,658.28 and 6,205.67

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Solution

The fourth proportional to 7,139.59, 10,658.28 and 6,205.67 is: 9,264.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.59 : 10,658.28 = 6,205.67 : x
  2. Step 2: Convert to fraction form
    7,139.59/10,658.28 = 6,205.67/x
  3. Step 3: Cross multiply
    7,139.59x = 10,658.28 × 6,205.67
  4. Step 4: Simplify right side
    7,139.59x = 66,141,768.45
  5. Step 5: Solve for x
    x = 66,141,768.45/7,139.59
  6. Step 6: Final answer
    x = 9,264.08

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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.