Home / 1,917.32-2,875.70-530.75

Finding the Fourth Proportional to 1,917.32, 2,875.70 and 530.75

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Solution

The fourth proportional to 1,917.32, 2,875.70 and 530.75 is: 796.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.32 : 2,875.70 = 530.75 : x
  2. Step 2: Convert to fraction form
    1,917.32/2,875.70 = 530.75/x
  3. Step 3: Cross multiply
    1,917.32x = 2,875.70 × 530.75
  4. Step 4: Simplify right side
    1,917.32x = 1,526,286.29
  5. Step 5: Solve for x
    x = 1,526,286.29/1,917.32
  6. Step 6: Final answer
    x = 796.05

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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.