Home / 1,457.07-2,185.70-417.15

Finding the Fourth Proportional to 1,457.07, 2,185.70 and 417.15

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Solution

The fourth proportional to 1,457.07, 2,185.70 and 417.15 is: 625.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,457.07 : 2,185.70 = 417.15 : x
  2. Step 2: Convert to fraction form
    1,457.07/2,185.70 = 417.15/x
  3. Step 3: Cross multiply
    1,457.07x = 2,185.70 × 417.15
  4. Step 4: Simplify right side
    1,457.07x = 911,765.02
  5. Step 5: Solve for x
    x = 911,765.02/1,457.07
  6. Step 6: Final answer
    x = 625.75

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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.