Home / 7,320.20-10,981.05-2,390.21

Finding the Fourth Proportional to 7,320.20, 10,981.05 and 2,390.21

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Solution

The fourth proportional to 7,320.20, 10,981.05 and 2,390.21 is: 3,585.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,320.20 : 10,981.05 = 2,390.21 : x
  2. Step 2: Convert to fraction form
    7,320.20/10,981.05 = 2,390.21/x
  3. Step 3: Cross multiply
    7,320.20x = 10,981.05 × 2,390.21
  4. Step 4: Simplify right side
    7,320.20x = 26,247,015.52
  5. Step 5: Solve for x
    x = 26,247,015.52/7,320.20
  6. Step 6: Final answer
    x = 3,585.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.