Home / 3,927.93-5,420.50-2,159.62

Finding the Fourth Proportional to 3,927.93, 5,420.50 and 2,159.62

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Solution

The fourth proportional to 3,927.93, 5,420.50 and 2,159.62 is: 2,980.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.93 : 5,420.50 = 2,159.62 : x
  2. Step 2: Convert to fraction form
    3,927.93/5,420.50 = 2,159.62/x
  3. Step 3: Cross multiply
    3,927.93x = 5,420.50 × 2,159.62
  4. Step 4: Simplify right side
    3,927.93x = 11,706,220.21
  5. Step 5: Solve for x
    x = 11,706,220.21/3,927.93
  6. Step 6: Final answer
    x = 2,980.25

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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.