Home / 5,278.04-7,918.88-1,992.07

Finding the Fourth Proportional to 5,278.04, 7,918.88 and 1,992.07

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Solution

The fourth proportional to 5,278.04, 7,918.88 and 1,992.07 is: 2,988.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.04 : 7,918.88 = 1,992.07 : x
  2. Step 2: Convert to fraction form
    5,278.04/7,918.88 = 1,992.07/x
  3. Step 3: Cross multiply
    5,278.04x = 7,918.88 × 1,992.07
  4. Step 4: Simplify right side
    5,278.04x = 15,774,963.28
  5. Step 5: Solve for x
    x = 15,774,963.28/5,278.04
  6. Step 6: Final answer
    x = 2,988.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.