Home / 2,417.20-3,617.70-2,125.60

Finding the Fourth Proportional to 2,417.20, 3,617.70 and 2,125.60

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Solution

The fourth proportional to 2,417.20, 3,617.70 and 2,125.60 is: 3,181.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,417.20 : 3,617.70 = 2,125.60 : x
  2. Step 2: Convert to fraction form
    2,417.20/3,617.70 = 2,125.60/x
  3. Step 3: Cross multiply
    2,417.20x = 3,617.70 × 2,125.60
  4. Step 4: Simplify right side
    2,417.20x = 7,689,783.12
  5. Step 5: Solve for x
    x = 7,689,783.12/2,417.20
  6. Step 6: Final answer
    x = 3,181.28

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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.