Home / 3,953.84-5,458.08-2,840.36

Finding the Fourth Proportional to 3,953.84, 5,458.08 and 2,840.36

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Solution

The fourth proportional to 3,953.84, 5,458.08 and 2,840.36 is: 3,920.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,953.84 : 5,458.08 = 2,840.36 : x
  2. Step 2: Convert to fraction form
    3,953.84/5,458.08 = 2,840.36/x
  3. Step 3: Cross multiply
    3,953.84x = 5,458.08 × 2,840.36
  4. Step 4: Simplify right side
    3,953.84x = 15,502,912.11
  5. Step 5: Solve for x
    x = 15,502,912.11/3,953.84
  6. Step 6: Final answer
    x = 3,920.98

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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.