Home / 1,770.30-2,655.46-905.22

Finding the Fourth Proportional to 1,770.30, 2,655.46 and 905.22

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Solution

The fourth proportional to 1,770.30, 2,655.46 and 905.22 is: 1,357.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,770.30 : 2,655.46 = 905.22 : x
  2. Step 2: Convert to fraction form
    1,770.30/2,655.46 = 905.22/x
  3. Step 3: Cross multiply
    1,770.30x = 2,655.46 × 905.22
  4. Step 4: Simplify right side
    1,770.30x = 2,403,775.50
  5. Step 5: Solve for x
    x = 2,403,775.50/1,770.30
  6. Step 6: Final answer
    x = 1,357.84

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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.