Home / 1,520.14-2,280.12-901.92

Finding the Fourth Proportional to 1,520.14, 2,280.12 and 901.92

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Solution

The fourth proportional to 1,520.14, 2,280.12 and 901.92 is: 1,352.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520.14 : 2,280.12 = 901.92 : x
  2. Step 2: Convert to fraction form
    1,520.14/2,280.12 = 901.92/x
  3. Step 3: Cross multiply
    1,520.14x = 2,280.12 × 901.92
  4. Step 4: Simplify right side
    1,520.14x = 2,056,485.83
  5. Step 5: Solve for x
    x = 2,056,485.83/1,520.14
  6. Step 6: Final answer
    x = 1,352.83

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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.