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Finding the Fourth Proportional to 1,516.90, 2,093.52 and 853.88

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Solution

The fourth proportional to 1,516.90, 2,093.52 and 853.88 is: 1,178.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,516.90 : 2,093.52 = 853.88 : x
  2. Step 2: Convert to fraction form
    1,516.90/2,093.52 = 853.88/x
  3. Step 3: Cross multiply
    1,516.90x = 2,093.52 × 853.88
  4. Step 4: Simplify right side
    1,516.90x = 1,787,612.24
  5. Step 5: Solve for x
    x = 1,787,612.24/1,516.90
  6. Step 6: Final answer
    x = 1,178.47

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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.