Home / 3,985.20-5,497.47-2,412.99

Finding the Fourth Proportional to 3,985.20, 5,497.47 and 2,412.99

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Solution

The fourth proportional to 3,985.20, 5,497.47 and 2,412.99 is: 3,328.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.20 : 5,497.47 = 2,412.99 : x
  2. Step 2: Convert to fraction form
    3,985.20/5,497.47 = 2,412.99/x
  3. Step 3: Cross multiply
    3,985.20x = 5,497.47 × 2,412.99
  4. Step 4: Simplify right side
    3,985.20x = 13,265,340.14
  5. Step 5: Solve for x
    x = 13,265,340.14/3,985.20
  6. Step 6: Final answer
    x = 3,328.65

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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.