Home / 4,089.60-6,134.40-2,145.60

Finding the Fourth Proportional to 4,089.60, 6,134.40 and 2,145.60

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Solution

The fourth proportional to 4,089.60, 6,134.40 and 2,145.60 is: 3,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,089.60 : 6,134.40 = 2,145.60 : x
  2. Step 2: Convert to fraction form
    4,089.60/6,134.40 = 2,145.60/x
  3. Step 3: Cross multiply
    4,089.60x = 6,134.40 × 2,145.60
  4. Step 4: Simplify right side
    4,089.60x = 13,161,968.64
  5. Step 5: Solve for x
    x = 13,161,968.64/4,089.60
  6. Step 6: Final answer
    x = 3,218.40

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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.