Home / 2,867.52-3,955.39-1,688.37

Finding the Fourth Proportional to 2,867.52, 3,955.39 and 1,688.37

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Solution

The fourth proportional to 2,867.52, 3,955.39 and 1,688.37 is: 2,328.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867.52 : 3,955.39 = 1,688.37 : x
  2. Step 2: Convert to fraction form
    2,867.52/3,955.39 = 1,688.37/x
  3. Step 3: Cross multiply
    2,867.52x = 3,955.39 × 1,688.37
  4. Step 4: Simplify right side
    2,867.52x = 6,678,161.81
  5. Step 5: Solve for x
    x = 6,678,161.81/2,867.52
  6. Step 6: Final answer
    x = 2,328.90

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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.