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Finding the Fourth Proportional to 7,139.14, 9,849.63 and 4,624.45

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Solution

The fourth proportional to 7,139.14, 9,849.63 and 4,624.45 is: 6,380.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.14 : 9,849.63 = 4,624.45 : x
  2. Step 2: Convert to fraction form
    7,139.14/9,849.63 = 4,624.45/x
  3. Step 3: Cross multiply
    7,139.14x = 9,849.63 × 4,624.45
  4. Step 4: Simplify right side
    7,139.14x = 45,549,121.45
  5. Step 5: Solve for x
    x = 45,549,121.45/7,139.14
  6. Step 6: Final answer
    x = 6,380.20

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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.