Home / 2,332.61-3,219.38-1,388.45

Finding the Fourth Proportional to 2,332.61, 3,219.38 and 1,388.45

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Solution

The fourth proportional to 2,332.61, 3,219.38 and 1,388.45 is: 1,916.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,332.61 : 3,219.38 = 1,388.45 : x
  2. Step 2: Convert to fraction form
    2,332.61/3,219.38 = 1,388.45/x
  3. Step 3: Cross multiply
    2,332.61x = 3,219.38 × 1,388.45
  4. Step 4: Simplify right side
    2,332.61x = 4,469,925.12
  5. Step 5: Solve for x
    x = 4,469,925.12/2,332.61
  6. Step 6: Final answer
    x = 1,916.27

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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.