Home / 3,417.28-4,715.68-2,020

Finding the Fourth Proportional to 3,417.28, 4,715.68 and 2,020

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Solution

The fourth proportional to 3,417.28, 4,715.68 and 2,020 is: 2,787.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,417.28 : 4,715.68 = 2,020 : x
  2. Step 2: Convert to fraction form
    3,417.28/4,715.68 = 2,020/x
  3. Step 3: Cross multiply
    3,417.28x = 4,715.68 × 2,020
  4. Step 4: Simplify right side
    3,417.28x = 9,525,673.60
  5. Step 5: Solve for x
    x = 9,525,673.60/3,417.28
  6. Step 6: Final answer
    x = 2,787.50

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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.