Home / 3,420.12-5,132.16-1,860.28

Finding the Fourth Proportional to 3,420.12, 5,132.16 and 1,860.28

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Solution

The fourth proportional to 3,420.12, 5,132.16 and 1,860.28 is: 2,791.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.12 : 5,132.16 = 1,860.28 : x
  2. Step 2: Convert to fraction form
    3,420.12/5,132.16 = 1,860.28/x
  3. Step 3: Cross multiply
    3,420.12x = 5,132.16 × 1,860.28
  4. Step 4: Simplify right side
    3,420.12x = 9,547,241.77
  5. Step 5: Solve for x
    x = 9,547,241.77/3,420.12
  6. Step 6: Final answer
    x = 2,791.49

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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.