Home / 2,505.22-3,457-1,386.16

Finding the Fourth Proportional to 2,505.22, 3,457 and 1,386.16

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Solution

The fourth proportional to 2,505.22, 3,457 and 1,386.16 is: 1,912.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,505.22 : 3,457 = 1,386.16 : x
  2. Step 2: Convert to fraction form
    2,505.22/3,457 = 1,386.16/x
  3. Step 3: Cross multiply
    2,505.22x = 3,457 × 1,386.16
  4. Step 4: Simplify right side
    2,505.22x = 4,791,955.12
  5. Step 5: Solve for x
    x = 4,791,955.12/2,505.22
  6. Step 6: Final answer
    x = 1,912.79

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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.