Home / 3,396.52-4,688.85-2,139.40

Finding the Fourth Proportional to 3,396.52, 4,688.85 and 2,139.40

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Solution

The fourth proportional to 3,396.52, 4,688.85 and 2,139.40 is: 2,953.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,396.52 : 4,688.85 = 2,139.40 : x
  2. Step 2: Convert to fraction form
    3,396.52/4,688.85 = 2,139.40/x
  3. Step 3: Cross multiply
    3,396.52x = 4,688.85 × 2,139.40
  4. Step 4: Simplify right side
    3,396.52x = 10,031,325.69
  5. Step 5: Solve for x
    x = 10,031,325.69/3,396.52
  6. Step 6: Final answer
    x = 2,953.41

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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.