Home / 3,865.08-5,330.52-2,688.96

Finding the Fourth Proportional to 3,865.08, 5,330.52 and 2,688.96

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Solution

The fourth proportional to 3,865.08, 5,330.52 and 2,688.96 is: 3,708.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,865.08 : 5,330.52 = 2,688.96 : x
  2. Step 2: Convert to fraction form
    3,865.08/5,330.52 = 2,688.96/x
  3. Step 3: Cross multiply
    3,865.08x = 5,330.52 × 2,688.96
  4. Step 4: Simplify right side
    3,865.08x = 14,333,555.06
  5. Step 5: Solve for x
    x = 14,333,555.06/3,865.08
  6. Step 6: Final answer
    x = 3,708.48

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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.