Home / 1,515.42-2,262.08-1,330.90

Finding the Fourth Proportional to 1,515.42, 2,262.08 and 1,330.90

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Solution

The fourth proportional to 1,515.42, 2,262.08 and 1,330.90 is: 1,986.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.42 : 2,262.08 = 1,330.90 : x
  2. Step 2: Convert to fraction form
    1,515.42/2,262.08 = 1,330.90/x
  3. Step 3: Cross multiply
    1,515.42x = 2,262.08 × 1,330.90
  4. Step 4: Simplify right side
    1,515.42x = 3,010,584.31
  5. Step 5: Solve for x
    x = 3,010,584.31/1,515.42
  6. Step 6: Final answer
    x = 1,986.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.