Home / 2,285.28-3,430.24-1,421.76

Finding the Fourth Proportional to 2,285.28, 3,430.24 and 1,421.76

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Solution

The fourth proportional to 2,285.28, 3,430.24 and 1,421.76 is: 2,134.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.28 : 3,430.24 = 1,421.76 : x
  2. Step 2: Convert to fraction form
    2,285.28/3,430.24 = 1,421.76/x
  3. Step 3: Cross multiply
    2,285.28x = 3,430.24 × 1,421.76
  4. Step 4: Simplify right side
    2,285.28x = 4,876,978.02
  5. Step 5: Solve for x
    x = 4,876,978.02/2,285.28
  6. Step 6: Final answer
    x = 2,134.08

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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.