Home / 3,970.16-5,475.25-2,478.22

Finding the Fourth Proportional to 3,970.16, 5,475.25 and 2,478.22

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Solution

The fourth proportional to 3,970.16, 5,475.25 and 2,478.22 is: 3,417.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.16 : 5,475.25 = 2,478.22 : x
  2. Step 2: Convert to fraction form
    3,970.16/5,475.25 = 2,478.22/x
  3. Step 3: Cross multiply
    3,970.16x = 5,475.25 × 2,478.22
  4. Step 4: Simplify right side
    3,970.16x = 13,568,864.92
  5. Step 5: Solve for x
    x = 13,568,864.92/3,970.16
  6. Step 6: Final answer
    x = 3,417.71

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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.