Home / 1,356.13-2,033.21-916.29

Finding the Fourth Proportional to 1,356.13, 2,033.21 and 916.29

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Solution

The fourth proportional to 1,356.13, 2,033.21 and 916.29 is: 1,373.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,356.13 : 2,033.21 = 916.29 : x
  2. Step 2: Convert to fraction form
    1,356.13/2,033.21 = 916.29/x
  3. Step 3: Cross multiply
    1,356.13x = 2,033.21 × 916.29
  4. Step 4: Simplify right side
    1,356.13x = 1,863,005.41
  5. Step 5: Solve for x
    x = 1,863,005.41/1,356.13
  6. Step 6: Final answer
    x = 1,373.77

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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.