Home / 1,214.90-1,822.35-801.80

Finding the Fourth Proportional to 1,214.90, 1,822.35 and 801.80

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Solution

The fourth proportional to 1,214.90, 1,822.35 and 801.80 is: 1,202.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.90 : 1,822.35 = 801.80 : x
  2. Step 2: Convert to fraction form
    1,214.90/1,822.35 = 801.80/x
  3. Step 3: Cross multiply
    1,214.90x = 1,822.35 × 801.80
  4. Step 4: Simplify right side
    1,214.90x = 1,461,160.23
  5. Step 5: Solve for x
    x = 1,461,160.23/1,214.90
  6. Step 6: Final answer
    x = 1,202.70

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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.