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Finding the Fourth Proportional to 2,916.80, 4,368.72 and 2,262.40

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Solution

The fourth proportional to 2,916.80, 4,368.72 and 2,262.40 is: 3,388.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,916.80 : 4,368.72 = 2,262.40 : x
  2. Step 2: Convert to fraction form
    2,916.80/4,368.72 = 2,262.40/x
  3. Step 3: Cross multiply
    2,916.80x = 4,368.72 × 2,262.40
  4. Step 4: Simplify right side
    2,916.80x = 9,883,792.13
  5. Step 5: Solve for x
    x = 9,883,792.13/2,916.80
  6. Step 6: Final answer
    x = 3,388.57

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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.