Home / 3,917.08-5,875.64-1,320.04

Finding the Fourth Proportional to 3,917.08, 5,875.64 and 1,320.04

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Solution

The fourth proportional to 3,917.08, 5,875.64 and 1,320.04 is: 1,980.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.08 : 5,875.64 = 1,320.04 : x
  2. Step 2: Convert to fraction form
    3,917.08/5,875.64 = 1,320.04/x
  3. Step 3: Cross multiply
    3,917.08x = 5,875.64 × 1,320.04
  4. Step 4: Simplify right side
    3,917.08x = 7,756,079.83
  5. Step 5: Solve for x
    x = 7,756,079.83/3,917.08
  6. Step 6: Final answer
    x = 1,980.07

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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.