Home / 8,400.67-12,603.84-3,720.04

Finding the Fourth Proportional to 8,400.67, 12,603.84 and 3,720.04

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Solution

The fourth proportional to 8,400.67, 12,603.84 and 3,720.04 is: 5,581.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,400.67 : 12,603.84 = 3,720.04 : x
  2. Step 2: Convert to fraction form
    8,400.67/12,603.84 = 3,720.04/x
  3. Step 3: Cross multiply
    8,400.67x = 12,603.84 × 3,720.04
  4. Step 4: Simplify right side
    8,400.67x = 46,886,774.88
  5. Step 5: Solve for x
    x = 46,886,774.88/8,400.67
  6. Step 6: Final answer
    x = 5,581.31

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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.