Home / 4,308.40-6,458.28-2,921.92

Finding the Fourth Proportional to 4,308.40, 6,458.28 and 2,921.92

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Solution

The fourth proportional to 4,308.40, 6,458.28 and 2,921.92 is: 4,379.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,308.40 : 6,458.28 = 2,921.92 : x
  2. Step 2: Convert to fraction form
    4,308.40/6,458.28 = 2,921.92/x
  3. Step 3: Cross multiply
    4,308.40x = 6,458.28 × 2,921.92
  4. Step 4: Simplify right side
    4,308.40x = 18,870,577.50
  5. Step 5: Solve for x
    x = 18,870,577.50/4,308.40
  6. Step 6: Final answer
    x = 4,379.95

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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.