Home / 7,185.60-10,779.84-3,291.12

Finding the Fourth Proportional to 7,185.60, 10,779.84 and 3,291.12

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Solution

The fourth proportional to 7,185.60, 10,779.84 and 3,291.12 is: 4,937.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,185.60 : 10,779.84 = 3,291.12 : x
  2. Step 2: Convert to fraction form
    7,185.60/10,779.84 = 3,291.12/x
  3. Step 3: Cross multiply
    7,185.60x = 10,779.84 × 3,291.12
  4. Step 4: Simplify right side
    7,185.60x = 35,477,747.02
  5. Step 5: Solve for x
    x = 35,477,747.02/7,185.60
  6. Step 6: Final answer
    x = 4,937.34

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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.