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Finding the Fourth Proportional to 2,856.99, 4,287.11 and 1,623.63

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Solution

The fourth proportional to 2,856.99, 4,287.11 and 1,623.63 is: 2,436.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.99 : 4,287.11 = 1,623.63 : x
  2. Step 2: Convert to fraction form
    2,856.99/4,287.11 = 1,623.63/x
  3. Step 3: Cross multiply
    2,856.99x = 4,287.11 × 1,623.63
  4. Step 4: Simplify right side
    2,856.99x = 6,960,672.29
  5. Step 5: Solve for x
    x = 6,960,672.29/2,856.99
  6. Step 6: Final answer
    x = 2,436.37

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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.