Home / 2,662.40-4,000.64-1,430.72

Finding the Fourth Proportional to 2,662.40, 4,000.64 and 1,430.72

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Solution

The fourth proportional to 2,662.40, 4,000.64 and 1,430.72 is: 2,149.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,662.40 : 4,000.64 = 1,430.72 : x
  2. Step 2: Convert to fraction form
    2,662.40/4,000.64 = 1,430.72/x
  3. Step 3: Cross multiply
    2,662.40x = 4,000.64 × 1,430.72
  4. Step 4: Simplify right side
    2,662.40x = 5,723,795.66
  5. Step 5: Solve for x
    x = 5,723,795.66/2,662.40
  6. Step 6: Final answer
    x = 2,149.86

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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.