Home / 3,851.84-5,774.20-1,386.08

Finding the Fourth Proportional to 3,851.84, 5,774.20 and 1,386.08

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Solution

The fourth proportional to 3,851.84, 5,774.20 and 1,386.08 is: 2,077.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.84 : 5,774.20 = 1,386.08 : x
  2. Step 2: Convert to fraction form
    3,851.84/5,774.20 = 1,386.08/x
  3. Step 3: Cross multiply
    3,851.84x = 5,774.20 × 1,386.08
  4. Step 4: Simplify right side
    3,851.84x = 8,003,503.14
  5. Step 5: Solve for x
    x = 8,003,503.14/3,851.84
  6. Step 6: Final answer
    x = 2,077.84

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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.