Home / 2,428.60-3,642.90-2,153.20

Finding the Fourth Proportional to 2,428.60, 3,642.90 and 2,153.20

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Solution

The fourth proportional to 2,428.60, 3,642.90 and 2,153.20 is: 3,229.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,428.60 : 3,642.90 = 2,153.20 : x
  2. Step 2: Convert to fraction form
    2,428.60/3,642.90 = 2,153.20/x
  3. Step 3: Cross multiply
    2,428.60x = 3,642.90 × 2,153.20
  4. Step 4: Simplify right side
    2,428.60x = 7,843,892.28
  5. Step 5: Solve for x
    x = 7,843,892.28/2,428.60
  6. Step 6: Final answer
    x = 3,229.80

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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.