Home / 7,228.13-9,974.81-3,916.13

Finding the Fourth Proportional to 7,228.13, 9,974.81 and 3,916.13

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Solution

The fourth proportional to 7,228.13, 9,974.81 and 3,916.13 is: 5,404.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,228.13 : 9,974.81 = 3,916.13 : x
  2. Step 2: Convert to fraction form
    7,228.13/9,974.81 = 3,916.13/x
  3. Step 3: Cross multiply
    7,228.13x = 9,974.81 × 3,916.13
  4. Step 4: Simplify right side
    7,228.13x = 39,062,612.60
  5. Step 5: Solve for x
    x = 39,062,612.60/7,228.13
  6. Step 6: Final answer
    x = 5,404.25

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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.