Home / 2,176.40-3,264.60-2,157.20

Finding the Fourth Proportional to 2,176.40, 3,264.60 and 2,157.20

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Solution

The fourth proportional to 2,176.40, 3,264.60 and 2,157.20 is: 3,235.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,176.40 : 3,264.60 = 2,157.20 : x
  2. Step 2: Convert to fraction form
    2,176.40/3,264.60 = 2,157.20/x
  3. Step 3: Cross multiply
    2,176.40x = 3,264.60 × 2,157.20
  4. Step 4: Simplify right side
    2,176.40x = 7,042,395.12
  5. Step 5: Solve for x
    x = 7,042,395.12/2,176.40
  6. Step 6: Final answer
    x = 3,235.80

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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.