Home / 1,516.18-2,274.38-785.89

Finding the Fourth Proportional to 1,516.18, 2,274.38 and 785.89

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Solution

The fourth proportional to 1,516.18, 2,274.38 and 785.89 is: 1,178.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,516.18 : 2,274.38 = 785.89 : x
  2. Step 2: Convert to fraction form
    1,516.18/2,274.38 = 785.89/x
  3. Step 3: Cross multiply
    1,516.18x = 2,274.38 × 785.89
  4. Step 4: Simplify right side
    1,516.18x = 1,787,402.88
  5. Step 5: Solve for x
    x = 1,787,402.88/1,516.18
  6. Step 6: Final answer
    x = 1,178.89

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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.