Home / 2,455.17-3,385.79-1,864.68

Finding the Fourth Proportional to 2,455.17, 3,385.79 and 1,864.68

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Solution

The fourth proportional to 2,455.17, 3,385.79 and 1,864.68 is: 2,571.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.17 : 3,385.79 = 1,864.68 : x
  2. Step 2: Convert to fraction form
    2,455.17/3,385.79 = 1,864.68/x
  3. Step 3: Cross multiply
    2,455.17x = 3,385.79 × 1,864.68
  4. Step 4: Simplify right side
    2,455.17x = 6,313,405.57
  5. Step 5: Solve for x
    x = 6,313,405.57/2,455.17
  6. Step 6: Final answer
    x = 2,571.47

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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.