Home / 3,972.49-5,480.90-2,378.51

Finding the Fourth Proportional to 3,972.49, 5,480.90 and 2,378.51

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Solution

The fourth proportional to 3,972.49, 5,480.90 and 2,378.51 is: 3,281.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.49 : 5,480.90 = 2,378.51 : x
  2. Step 2: Convert to fraction form
    3,972.49/5,480.90 = 2,378.51/x
  3. Step 3: Cross multiply
    3,972.49x = 5,480.90 × 2,378.51
  4. Step 4: Simplify right side
    3,972.49x = 13,036,355.81
  5. Step 5: Solve for x
    x = 13,036,355.81/3,972.49
  6. Step 6: Final answer
    x = 3,281.66

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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.