Home / 3,515.08-5,272.74-917.92

Finding the Fourth Proportional to 3,515.08, 5,272.74 and 917.92

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Solution

The fourth proportional to 3,515.08, 5,272.74 and 917.92 is: 1,376.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515.08 : 5,272.74 = 917.92 : x
  2. Step 2: Convert to fraction form
    3,515.08/5,272.74 = 917.92/x
  3. Step 3: Cross multiply
    3,515.08x = 5,272.74 × 917.92
  4. Step 4: Simplify right side
    3,515.08x = 4,839,953.50
  5. Step 5: Solve for x
    x = 4,839,953.50/3,515.08
  6. Step 6: Final answer
    x = 1,376.91

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1.5x scale

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.