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Finding the Fourth Proportional to 1,578.87, 2,363.45 and 1,029.87

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Solution

The fourth proportional to 1,578.87, 2,363.45 and 1,029.87 is: 1,541.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.87 : 2,363.45 = 1,029.87 : x
  2. Step 2: Convert to fraction form
    1,578.87/2,363.45 = 1,029.87/x
  3. Step 3: Cross multiply
    1,578.87x = 2,363.45 × 1,029.87
  4. Step 4: Simplify right side
    1,578.87x = 2,434,041.10
  5. Step 5: Solve for x
    x = 2,434,041.10/1,578.87
  6. Step 6: Final answer
    x = 1,541.63

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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.