Home / 3,520.45-5,280.40-923.32

Finding the Fourth Proportional to 3,520.45, 5,280.40 and 923.32

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Solution

The fourth proportional to 3,520.45, 5,280.40 and 923.32 is: 1,384.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.45 : 5,280.40 = 923.32 : x
  2. Step 2: Convert to fraction form
    3,520.45/5,280.40 = 923.32/x
  3. Step 3: Cross multiply
    3,520.45x = 5,280.40 × 923.32
  4. Step 4: Simplify right side
    3,520.45x = 4,875,498.93
  5. Step 5: Solve for x
    x = 4,875,498.93/3,520.45
  6. Step 6: Final answer
    x = 1,384.91

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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.