Home / 1,575.07-2,361.81-917.16

Finding the Fourth Proportional to 1,575.07, 2,361.81 and 917.16

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Solution

The fourth proportional to 1,575.07, 2,361.81 and 917.16 is: 1,375.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,575.07 : 2,361.81 = 917.16 : x
  2. Step 2: Convert to fraction form
    1,575.07/2,361.81 = 917.16/x
  3. Step 3: Cross multiply
    1,575.07x = 2,361.81 × 917.16
  4. Step 4: Simplify right side
    1,575.07x = 2,166,157.66
  5. Step 5: Solve for x
    x = 2,166,157.66/1,575.07
  6. Step 6: Final answer
    x = 1,375.28

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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.