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Finding the Fourth Proportional to 2,916.04, 4,372.80 and 1,355.80

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Solution

The fourth proportional to 2,916.04, 4,372.80 and 1,355.80 is: 2,033.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,916.04 : 4,372.80 = 1,355.80 : x
  2. Step 2: Convert to fraction form
    2,916.04/4,372.80 = 1,355.80/x
  3. Step 3: Cross multiply
    2,916.04x = 4,372.80 × 1,355.80
  4. Step 4: Simplify right side
    2,916.04x = 5,928,642.24
  5. Step 5: Solve for x
    x = 5,928,642.24/2,916.04
  6. Step 6: Final answer
    x = 2,033.11

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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.