Home / 2,888.60-4,333.92-1,428.76

Finding the Fourth Proportional to 2,888.60, 4,333.92 and 1,428.76

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Solution

The fourth proportional to 2,888.60, 4,333.92 and 1,428.76 is: 2,143.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,888.60 : 4,333.92 = 1,428.76 : x
  2. Step 2: Convert to fraction form
    2,888.60/4,333.92 = 1,428.76/x
  3. Step 3: Cross multiply
    2,888.60x = 4,333.92 × 1,428.76
  4. Step 4: Simplify right side
    2,888.60x = 6,192,131.54
  5. Step 5: Solve for x
    x = 6,192,131.54/2,888.60
  6. Step 6: Final answer
    x = 2,143.64

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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.