Home / 7,285.20-10,920.23-4,945.40

Finding the Fourth Proportional to 7,285.20, 10,920.23 and 4,945.40

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Solution

The fourth proportional to 7,285.20, 10,920.23 and 4,945.40 is: 7,412.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,285.20 : 10,920.23 = 4,945.40 : x
  2. Step 2: Convert to fraction form
    7,285.20/10,920.23 = 4,945.40/x
  3. Step 3: Cross multiply
    7,285.20x = 10,920.23 × 4,945.40
  4. Step 4: Simplify right side
    7,285.20x = 54,004,826.11
  5. Step 5: Solve for x
    x = 54,004,826.11/7,285.20
  6. Step 6: Final answer
    x = 7,412.95

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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.