Home / 2,120.02-3,180.18-887.56

Finding the Fourth Proportional to 2,120.02, 3,180.18 and 887.56

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Solution

The fourth proportional to 2,120.02, 3,180.18 and 887.56 is: 1,331.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.02 : 3,180.18 = 887.56 : x
  2. Step 2: Convert to fraction form
    2,120.02/3,180.18 = 887.56/x
  3. Step 3: Cross multiply
    2,120.02x = 3,180.18 × 887.56
  4. Step 4: Simplify right side
    2,120.02x = 2,822,600.56
  5. Step 5: Solve for x
    x = 2,822,600.56/2,120.02
  6. Step 6: Final answer
    x = 1,331.40

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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.