Home / 1,584.16-2,380.96-1,312

Finding the Fourth Proportional to 1,584.16, 2,380.96 and 1,312

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Solution

The fourth proportional to 1,584.16, 2,380.96 and 1,312 is: 1,971.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,584.16 : 2,380.96 = 1,312 : x
  2. Step 2: Convert to fraction form
    1,584.16/2,380.96 = 1,312/x
  3. Step 3: Cross multiply
    1,584.16x = 2,380.96 × 1,312
  4. Step 4: Simplify right side
    1,584.16x = 3,123,819.52
  5. Step 5: Solve for x
    x = 3,123,819.52/1,584.16
  6. Step 6: Final answer
    x = 1,971.91

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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.