Home / 2,289.60-3,432.08-828.32

Finding the Fourth Proportional to 2,289.60, 3,432.08 and 828.32

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Solution

The fourth proportional to 2,289.60, 3,432.08 and 828.32 is: 1,241.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.60 : 3,432.08 = 828.32 : x
  2. Step 2: Convert to fraction form
    2,289.60/3,432.08 = 828.32/x
  3. Step 3: Cross multiply
    2,289.60x = 3,432.08 × 828.32
  4. Step 4: Simplify right side
    2,289.60x = 2,842,860.51
  5. Step 5: Solve for x
    x = 2,842,860.51/2,289.60
  6. Step 6: Final answer
    x = 1,241.64

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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.