Home / 2,115.02-3,172.02-882.45

Finding the Fourth Proportional to 2,115.02, 3,172.02 and 882.45

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Solution

The fourth proportional to 2,115.02, 3,172.02 and 882.45 is: 1,323.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.02 : 3,172.02 = 882.45 : x
  2. Step 2: Convert to fraction form
    2,115.02/3,172.02 = 882.45/x
  3. Step 3: Cross multiply
    2,115.02x = 3,172.02 × 882.45
  4. Step 4: Simplify right side
    2,115.02x = 2,799,149.05
  5. Step 5: Solve for x
    x = 2,799,149.05/2,115.02
  6. Step 6: Final answer
    x = 1,323.46

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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.