Home / 3,712.65-5,125.34-2,871.45

Finding the Fourth Proportional to 3,712.65, 5,125.34 and 2,871.45

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Solution

The fourth proportional to 3,712.65, 5,125.34 and 2,871.45 is: 3,964.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.65 : 5,125.34 = 2,871.45 : x
  2. Step 2: Convert to fraction form
    3,712.65/5,125.34 = 2,871.45/x
  3. Step 3: Cross multiply
    3,712.65x = 5,125.34 × 2,871.45
  4. Step 4: Simplify right side
    3,712.65x = 14,717,143.19
  5. Step 5: Solve for x
    x = 14,717,143.19/3,712.65
  6. Step 6: Final answer
    x = 3,964.05

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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.