Home / 5,457.40-8,186.70-1,995.40

Finding the Fourth Proportional to 5,457.40, 8,186.70 and 1,995.40

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Solution

The fourth proportional to 5,457.40, 8,186.70 and 1,995.40 is: 2,993.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,457.40 : 8,186.70 = 1,995.40 : x
  2. Step 2: Convert to fraction form
    5,457.40/8,186.70 = 1,995.40/x
  3. Step 3: Cross multiply
    5,457.40x = 8,186.70 × 1,995.40
  4. Step 4: Simplify right side
    5,457.40x = 16,335,741.18
  5. Step 5: Solve for x
    x = 16,335,741.18/5,457.40
  6. Step 6: Final answer
    x = 2,993.32

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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.