Home / 3,457.13-5,187.74-1,378.13

Finding the Fourth Proportional to 3,457.13, 5,187.74 and 1,378.13

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Solution

The fourth proportional to 3,457.13, 5,187.74 and 1,378.13 is: 2,068.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,457.13 : 5,187.74 = 1,378.13 : x
  2. Step 2: Convert to fraction form
    3,457.13/5,187.74 = 1,378.13/x
  3. Step 3: Cross multiply
    3,457.13x = 5,187.74 × 1,378.13
  4. Step 4: Simplify right side
    3,457.13x = 7,149,347.30
  5. Step 5: Solve for x
    x = 7,149,347.30/3,457.13
  6. Step 6: Final answer
    x = 2,068.00

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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.