Home / 2,113.10-2,916.25-1,228.96

Finding the Fourth Proportional to 2,113.10, 2,916.25 and 1,228.96

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Solution

The fourth proportional to 2,113.10, 2,916.25 and 1,228.96 is: 1,696.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.10 : 2,916.25 = 1,228.96 : x
  2. Step 2: Convert to fraction form
    2,113.10/2,916.25 = 1,228.96/x
  3. Step 3: Cross multiply
    2,113.10x = 2,916.25 × 1,228.96
  4. Step 4: Simplify right side
    2,113.10x = 3,583,954.60
  5. Step 5: Solve for x
    x = 3,583,954.60/2,113.10
  6. Step 6: Final answer
    x = 1,696.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.