Home / 2,972.08-4,101.60-1,712.80

Finding the Fourth Proportional to 2,972.08, 4,101.60 and 1,712.80

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Solution

The fourth proportional to 2,972.08, 4,101.60 and 1,712.80 is: 2,363.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.08 : 4,101.60 = 1,712.80 : x
  2. Step 2: Convert to fraction form
    2,972.08/4,101.60 = 1,712.80/x
  3. Step 3: Cross multiply
    2,972.08x = 4,101.60 × 1,712.80
  4. Step 4: Simplify right side
    2,972.08x = 7,025,220.48
  5. Step 5: Solve for x
    x = 7,025,220.48/2,972.08
  6. Step 6: Final answer
    x = 2,363.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.