Home / 3,875.34-5,813.93-1,278.28

Finding the Fourth Proportional to 3,875.34, 5,813.93 and 1,278.28

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Solution

The fourth proportional to 3,875.34, 5,813.93 and 1,278.28 is: 1,917.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,875.34 : 5,813.93 = 1,278.28 : x
  2. Step 2: Convert to fraction form
    3,875.34/5,813.93 = 1,278.28/x
  3. Step 3: Cross multiply
    3,875.34x = 5,813.93 × 1,278.28
  4. Step 4: Simplify right side
    3,875.34x = 7,431,833.71
  5. Step 5: Solve for x
    x = 7,431,833.71/3,875.34
  6. Step 6: Final answer
    x = 1,917.72

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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.