Home / 3,935.90-5,434.72-2,679.60

Finding the Fourth Proportional to 3,935.90, 5,434.72 and 2,679.60

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Solution

The fourth proportional to 3,935.90, 5,434.72 and 2,679.60 is: 3,700.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,935.90 : 5,434.72 = 2,679.60 : x
  2. Step 2: Convert to fraction form
    3,935.90/5,434.72 = 2,679.60/x
  3. Step 3: Cross multiply
    3,935.90x = 5,434.72 × 2,679.60
  4. Step 4: Simplify right side
    3,935.90x = 14,562,875.71
  5. Step 5: Solve for x
    x = 14,562,875.71/3,935.90
  6. Step 6: Final answer
    x = 3,700.01

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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.