Home / 1,312.77-1,966.65-1,268.82

Finding the Fourth Proportional to 1,312.77, 1,966.65 and 1,268.82

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Solution

The fourth proportional to 1,312.77, 1,966.65 and 1,268.82 is: 1,900.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312.77 : 1,966.65 = 1,268.82 : x
  2. Step 2: Convert to fraction form
    1,312.77/1,966.65 = 1,268.82/x
  3. Step 3: Cross multiply
    1,312.77x = 1,966.65 × 1,268.82
  4. Step 4: Simplify right side
    1,312.77x = 2,495,324.85
  5. Step 5: Solve for x
    x = 2,495,324.85/1,312.77
  6. Step 6: Final answer
    x = 1,900.81

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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.