Home / 3,487.42-4,812.36-2,160.64

Finding the Fourth Proportional to 3,487.42, 4,812.36 and 2,160.64

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Solution

The fourth proportional to 3,487.42, 4,812.36 and 2,160.64 is: 2,981.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.42 : 4,812.36 = 2,160.64 : x
  2. Step 2: Convert to fraction form
    3,487.42/4,812.36 = 2,160.64/x
  3. Step 3: Cross multiply
    3,487.42x = 4,812.36 × 2,160.64
  4. Step 4: Simplify right side
    3,487.42x = 10,397,777.51
  5. Step 5: Solve for x
    x = 10,397,777.51/3,487.42
  6. Step 6: Final answer
    x = 2,981.51

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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.