Home / 5,290.06-7,929.42-2,515

Finding the Fourth Proportional to 5,290.06, 7,929.42 and 2,515

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Solution

The fourth proportional to 5,290.06, 7,929.42 and 2,515 is: 3,769.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,290.06 : 7,929.42 = 2,515 : x
  2. Step 2: Convert to fraction form
    5,290.06/7,929.42 = 2,515/x
  3. Step 3: Cross multiply
    5,290.06x = 7,929.42 × 2,515
  4. Step 4: Simplify right side
    5,290.06x = 19,942,491.30
  5. Step 5: Solve for x
    x = 19,942,491.30/5,290.06
  6. Step 6: Final answer
    x = 3,769.80

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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.