Home / 3,520.48-5,280.60-923.40

Finding the Fourth Proportional to 3,520.48, 5,280.60 and 923.40

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Solution

The fourth proportional to 3,520.48, 5,280.60 and 923.40 is: 1,385.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.48 : 5,280.60 = 923.40 : x
  2. Step 2: Convert to fraction form
    3,520.48/5,280.60 = 923.40/x
  3. Step 3: Cross multiply
    3,520.48x = 5,280.60 × 923.40
  4. Step 4: Simplify right side
    3,520.48x = 4,876,106.04
  5. Step 5: Solve for x
    x = 4,876,106.04/3,520.48
  6. Step 6: Final answer
    x = 1,385.07

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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.