Home / 1,312.91-1,966.84-1,268.94

Finding the Fourth Proportional to 1,312.91, 1,966.84 and 1,268.94

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Solution

The fourth proportional to 1,312.91, 1,966.84 and 1,268.94 is: 1,900.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312.91 : 1,966.84 = 1,268.94 : x
  2. Step 2: Convert to fraction form
    1,312.91/1,966.84 = 1,268.94/x
  3. Step 3: Cross multiply
    1,312.91x = 1,966.84 × 1,268.94
  4. Step 4: Simplify right side
    1,312.91x = 2,495,795.60
  5. Step 5: Solve for x
    x = 2,495,795.60/1,312.91
  6. Step 6: Final answer
    x = 1,900.97

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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.