Home / 5,276.79-7,915.73-1,992.65

Finding the Fourth Proportional to 5,276.79, 7,915.73 and 1,992.65

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Solution

The fourth proportional to 5,276.79, 7,915.73 and 1,992.65 is: 2,989.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,276.79 : 7,915.73 = 1,992.65 : x
  2. Step 2: Convert to fraction form
    5,276.79/7,915.73 = 1,992.65/x
  3. Step 3: Cross multiply
    5,276.79x = 7,915.73 × 1,992.65
  4. Step 4: Simplify right side
    5,276.79x = 15,773,229.84
  5. Step 5: Solve for x
    x = 15,773,229.84/5,276.79
  6. Step 6: Final answer
    x = 2,989.17

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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.