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Finding the Fourth Proportional to 2,068.99, 2,855.20 and 1,124.78

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Solution

The fourth proportional to 2,068.99, 2,855.20 and 1,124.78 is: 1,552.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,068.99 : 2,855.20 = 1,124.78 : x
  2. Step 2: Convert to fraction form
    2,068.99/2,855.20 = 1,124.78/x
  3. Step 3: Cross multiply
    2,068.99x = 2,855.20 × 1,124.78
  4. Step 4: Simplify right side
    2,068.99x = 3,211,465.48
  5. Step 5: Solve for x
    x = 3,211,465.48/2,068.99
  6. Step 6: Final answer
    x = 1,552.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.