Home / 2,280.30-3,421.53-1,126.86

Finding the Fourth Proportional to 2,280.30, 3,421.53 and 1,126.86

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Solution

The fourth proportional to 2,280.30, 3,421.53 and 1,126.86 is: 1,690.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.30 : 3,421.53 = 1,126.86 : x
  2. Step 2: Convert to fraction form
    2,280.30/3,421.53 = 1,126.86/x
  3. Step 3: Cross multiply
    2,280.30x = 3,421.53 × 1,126.86
  4. Step 4: Simplify right side
    2,280.30x = 3,855,585.30
  5. Step 5: Solve for x
    x = 3,855,585.30/2,280.30
  6. Step 6: Final answer
    x = 1,690.82

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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.