Home / 3,931.12-5,426.34-2,605.25

Finding the Fourth Proportional to 3,931.12, 5,426.34 and 2,605.25

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Solution

The fourth proportional to 3,931.12, 5,426.34 and 2,605.25 is: 3,596.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.12 : 5,426.34 = 2,605.25 : x
  2. Step 2: Convert to fraction form
    3,931.12/5,426.34 = 2,605.25/x
  3. Step 3: Cross multiply
    3,931.12x = 5,426.34 × 2,605.25
  4. Step 4: Simplify right side
    3,931.12x = 14,136,976.08
  5. Step 5: Solve for x
    x = 14,136,976.08/3,931.12
  6. Step 6: Final answer
    x = 3,596.17

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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.