Home / 3,875.18-5,812.69-1,278.11

Finding the Fourth Proportional to 3,875.18, 5,812.69 and 1,278.11

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Solution

The fourth proportional to 3,875.18, 5,812.69 and 1,278.11 is: 1,917.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,875.18 : 5,812.69 = 1,278.11 : x
  2. Step 2: Convert to fraction form
    3,875.18/5,812.69 = 1,278.11/x
  3. Step 3: Cross multiply
    3,875.18x = 5,812.69 × 1,278.11
  4. Step 4: Simplify right side
    3,875.18x = 7,429,266.95
  5. Step 5: Solve for x
    x = 7,429,266.95/3,875.18
  6. Step 6: Final answer
    x = 1,917.14

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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.