Home / 2,985.45-4,119.87-1,659.12

Finding the Fourth Proportional to 2,985.45, 4,119.87 and 1,659.12

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Solution

The fourth proportional to 2,985.45, 4,119.87 and 1,659.12 is: 2,289.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.45 : 4,119.87 = 1,659.12 : x
  2. Step 2: Convert to fraction form
    2,985.45/4,119.87 = 1,659.12/x
  3. Step 3: Cross multiply
    2,985.45x = 4,119.87 × 1,659.12
  4. Step 4: Simplify right side
    2,985.45x = 6,835,358.71
  5. Step 5: Solve for x
    x = 6,835,358.71/2,985.45
  6. Step 6: Final answer
    x = 2,289.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.