Home / 2,214.79-3,320.40-1,227.58

Finding the Fourth Proportional to 2,214.79, 3,320.40 and 1,227.58

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Solution

The fourth proportional to 2,214.79, 3,320.40 and 1,227.58 is: 1,840.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,214.79 : 3,320.40 = 1,227.58 : x
  2. Step 2: Convert to fraction form
    2,214.79/3,320.40 = 1,227.58/x
  3. Step 3: Cross multiply
    2,214.79x = 3,320.40 × 1,227.58
  4. Step 4: Simplify right side
    2,214.79x = 4,076,056.63
  5. Step 5: Solve for x
    x = 4,076,056.63/2,214.79
  6. Step 6: Final answer
    x = 1,840.38

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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.