Home / 1,318.86-1,966.59-1,266.93

Finding the Fourth Proportional to 1,318.86, 1,966.59 and 1,266.93

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Solution

The fourth proportional to 1,318.86, 1,966.59 and 1,266.93 is: 1,889.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.86 : 1,966.59 = 1,266.93 : x
  2. Step 2: Convert to fraction form
    1,318.86/1,966.59 = 1,266.93/x
  3. Step 3: Cross multiply
    1,318.86x = 1,966.59 × 1,266.93
  4. Step 4: Simplify right side
    1,318.86x = 2,491,531.87
  5. Step 5: Solve for x
    x = 2,491,531.87/1,318.86
  6. Step 6: Final answer
    x = 1,889.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.