Home / 3,970.53-5,479.25-2,398.77

Finding the Fourth Proportional to 3,970.53, 5,479.25 and 2,398.77

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Solution

The fourth proportional to 3,970.53, 5,479.25 and 2,398.77 is: 3,310.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.53 : 5,479.25 = 2,398.77 : x
  2. Step 2: Convert to fraction form
    3,970.53/5,479.25 = 2,398.77/x
  3. Step 3: Cross multiply
    3,970.53x = 5,479.25 × 2,398.77
  4. Step 4: Simplify right side
    3,970.53x = 13,143,448.53
  5. Step 5: Solve for x
    x = 13,143,448.53/3,970.53
  6. Step 6: Final answer
    x = 3,310.25

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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.