Home / 3,291.36-4,938.12-1,345.20

Finding the Fourth Proportional to 3,291.36, 4,938.12 and 1,345.20

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Solution

The fourth proportional to 3,291.36, 4,938.12 and 1,345.20 is: 2,018.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,291.36 : 4,938.12 = 1,345.20 : x
  2. Step 2: Convert to fraction form
    3,291.36/4,938.12 = 1,345.20/x
  3. Step 3: Cross multiply
    3,291.36x = 4,938.12 × 1,345.20
  4. Step 4: Simplify right side
    3,291.36x = 6,642,759.02
  5. Step 5: Solve for x
    x = 6,642,759.02/3,291.36
  6. Step 6: Final answer
    x = 2,018.24

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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.