Home / 3,457.68-5,164.47-3,128.12

Finding the Fourth Proportional to 3,457.68, 5,164.47 and 3,128.12

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Solution

The fourth proportional to 3,457.68, 5,164.47 and 3,128.12 is: 4,672.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,457.68 : 5,164.47 = 3,128.12 : x
  2. Step 2: Convert to fraction form
    3,457.68/5,164.47 = 3,128.12/x
  3. Step 3: Cross multiply
    3,457.68x = 5,164.47 × 3,128.12
  4. Step 4: Simplify right side
    3,457.68x = 16,155,056.07
  5. Step 5: Solve for x
    x = 16,155,056.07/3,457.68
  6. Step 6: Final answer
    x = 4,672.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.