Home / 7,186.40-10,779.60-3,298.40

Finding the Fourth Proportional to 7,186.40, 10,779.60 and 3,298.40

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Solution

The fourth proportional to 7,186.40, 10,779.60 and 3,298.40 is: 4,947.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,186.40 : 10,779.60 = 3,298.40 : x
  2. Step 2: Convert to fraction form
    7,186.40/10,779.60 = 3,298.40/x
  3. Step 3: Cross multiply
    7,186.40x = 10,779.60 × 3,298.40
  4. Step 4: Simplify right side
    7,186.40x = 35,555,432.64
  5. Step 5: Solve for x
    x = 35,555,432.64/7,186.40
  6. Step 6: Final answer
    x = 4,947.60

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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.