Home / 2,145.02-3,215.29-1,102.70

Finding the Fourth Proportional to 2,145.02, 3,215.29 and 1,102.70

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Solution

The fourth proportional to 2,145.02, 3,215.29 and 1,102.70 is: 1,652.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.02 : 3,215.29 = 1,102.70 : x
  2. Step 2: Convert to fraction form
    2,145.02/3,215.29 = 1,102.70/x
  3. Step 3: Cross multiply
    2,145.02x = 3,215.29 × 1,102.70
  4. Step 4: Simplify right side
    2,145.02x = 3,545,481.45
  5. Step 5: Solve for x
    x = 3,545,481.45/2,145.02
  6. Step 6: Final answer
    x = 1,652.89

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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.