Home / 3,925.65-5,417.49-2,157.29

Finding the Fourth Proportional to 3,925.65, 5,417.49 and 2,157.29

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Solution

The fourth proportional to 3,925.65, 5,417.49 and 2,157.29 is: 2,977.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,925.65 : 5,417.49 = 2,157.29 : x
  2. Step 2: Convert to fraction form
    3,925.65/5,417.49 = 2,157.29/x
  3. Step 3: Cross multiply
    3,925.65x = 5,417.49 × 2,157.29
  4. Step 4: Simplify right side
    3,925.65x = 11,687,128.79
  5. Step 5: Solve for x
    x = 11,687,128.79/3,925.65
  6. Step 6: Final answer
    x = 2,977.12

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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.