Home / 1,457.13-2,185.37-417.12

Finding the Fourth Proportional to 1,457.13, 2,185.37 and 417.12

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Solution

The fourth proportional to 1,457.13, 2,185.37 and 417.12 is: 625.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,457.13 : 2,185.37 = 417.12 : x
  2. Step 2: Convert to fraction form
    1,457.13/2,185.37 = 417.12/x
  3. Step 3: Cross multiply
    1,457.13x = 2,185.37 × 417.12
  4. Step 4: Simplify right side
    1,457.13x = 911,570.67
  5. Step 5: Solve for x
    x = 911,570.67/1,457.13
  6. Step 6: Final answer
    x = 625.59

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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.