Home / 3,189.84-4,784.64-1,459.68

Finding the Fourth Proportional to 3,189.84, 4,784.64 and 1,459.68

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Solution

The fourth proportional to 3,189.84, 4,784.64 and 1,459.68 is: 2,189.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.84 : 4,784.64 = 1,459.68 : x
  2. Step 2: Convert to fraction form
    3,189.84/4,784.64 = 1,459.68/x
  3. Step 3: Cross multiply
    3,189.84x = 4,784.64 × 1,459.68
  4. Step 4: Simplify right side
    3,189.84x = 6,984,043.32
  5. Step 5: Solve for x
    x = 6,984,043.32/3,189.84
  6. Step 6: Final answer
    x = 2,189.47

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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.