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Finding the Fourth Proportional to 3,358.28, 5,038.28 and 1,972.79

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Solution

The fourth proportional to 3,358.28, 5,038.28 and 1,972.79 is: 2,959.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,358.28 : 5,038.28 = 1,972.79 : x
  2. Step 2: Convert to fraction form
    3,358.28/5,038.28 = 1,972.79/x
  3. Step 3: Cross multiply
    3,358.28x = 5,038.28 × 1,972.79
  4. Step 4: Simplify right side
    3,358.28x = 9,939,463.47
  5. Step 5: Solve for x
    x = 9,939,463.47/3,358.28
  6. Step 6: Final answer
    x = 2,959.69

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1.5x scale

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.