Home / 3,128.36-4,715.98-2,916.96

Finding the Fourth Proportional to 3,128.36, 4,715.98 and 2,916.96

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Solution

The fourth proportional to 3,128.36, 4,715.98 and 2,916.96 is: 4,397.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.36 : 4,715.98 = 2,916.96 : x
  2. Step 2: Convert to fraction form
    3,128.36/4,715.98 = 2,916.96/x
  3. Step 3: Cross multiply
    3,128.36x = 4,715.98 × 2,916.96
  4. Step 4: Simplify right side
    3,128.36x = 13,756,325.02
  5. Step 5: Solve for x
    x = 13,756,325.02/3,128.36
  6. Step 6: Final answer
    x = 4,397.30

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.