Home / 1,555.12-2,329.02-1,228.30

Finding the Fourth Proportional to 1,555.12, 2,329.02 and 1,228.30

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Solution

The fourth proportional to 1,555.12, 2,329.02 and 1,228.30 is: 1,839.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.12 : 2,329.02 = 1,228.30 : x
  2. Step 2: Convert to fraction form
    1,555.12/2,329.02 = 1,228.30/x
  3. Step 3: Cross multiply
    1,555.12x = 2,329.02 × 1,228.30
  4. Step 4: Simplify right side
    1,555.12x = 2,860,735.27
  5. Step 5: Solve for x
    x = 2,860,735.27/1,555.12
  6. Step 6: Final answer
    x = 1,839.56

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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.