Home / 5,420.10-7,485.87-3,648.63

Finding the Fourth Proportional to 5,420.10, 7,485.87 and 3,648.63

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Solution

The fourth proportional to 5,420.10, 7,485.87 and 3,648.63 is: 5,039.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.10 : 7,485.87 = 3,648.63 : x
  2. Step 2: Convert to fraction form
    5,420.10/7,485.87 = 3,648.63/x
  3. Step 3: Cross multiply
    5,420.10x = 7,485.87 × 3,648.63
  4. Step 4: Simplify right side
    5,420.10x = 27,313,169.86
  5. Step 5: Solve for x
    x = 27,313,169.86/5,420.10
  6. Step 6: Final answer
    x = 5,039.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.