Home / 5,457.07-8,187.12-2,172.47

Finding the Fourth Proportional to 5,457.07, 8,187.12 and 2,172.47

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Solution

The fourth proportional to 5,457.07, 8,187.12 and 2,172.47 is: 3,259.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,457.07 : 8,187.12 = 2,172.47 : x
  2. Step 2: Convert to fraction form
    5,457.07/8,187.12 = 2,172.47/x
  3. Step 3: Cross multiply
    5,457.07x = 8,187.12 × 2,172.47
  4. Step 4: Simplify right side
    5,457.07x = 17,786,254.21
  5. Step 5: Solve for x
    x = 17,786,254.21/5,457.07
  6. Step 6: Final answer
    x = 3,259.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.