Home / 3,925.29-5,416.90-2,157.00

Finding the Fourth Proportional to 3,925.29, 5,416.90 and 2,157.00

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Solution

The fourth proportional to 3,925.29, 5,416.90 and 2,157.00 is: 2,976.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,925.29 : 5,416.90 = 2,157.00 : x
  2. Step 2: Convert to fraction form
    3,925.29/5,416.90 = 2,157.00/x
  3. Step 3: Cross multiply
    3,925.29x = 5,416.90 × 2,157.00
  4. Step 4: Simplify right side
    3,925.29x = 11,684,220.82
  5. Step 5: Solve for x
    x = 11,684,220.82/3,925.29
  6. Step 6: Final answer
    x = 2,976.66

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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.