Home / 2,956.20-4,430.13-1,640.55

Finding the Fourth Proportional to 2,956.20, 4,430.13 and 1,640.55

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Solution

The fourth proportional to 2,956.20, 4,430.13 and 1,640.55 is: 2,458.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,956.20 : 4,430.13 = 1,640.55 : x
  2. Step 2: Convert to fraction form
    2,956.20/4,430.13 = 1,640.55/x
  3. Step 3: Cross multiply
    2,956.20x = 4,430.13 × 1,640.55
  4. Step 4: Simplify right side
    2,956.20x = 7,267,849.77
  5. Step 5: Solve for x
    x = 7,267,849.77/2,956.20
  6. Step 6: Final answer
    x = 2,458.51

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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.