Home / 2,259.90-3,120.12-1,968.30

Finding the Fourth Proportional to 2,259.90, 3,120.12 and 1,968.30

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Solution

The fourth proportional to 2,259.90, 3,120.12 and 1,968.30 is: 2,717.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,259.90 : 3,120.12 = 1,968.30 : x
  2. Step 2: Convert to fraction form
    2,259.90/3,120.12 = 1,968.30/x
  3. Step 3: Cross multiply
    2,259.90x = 3,120.12 × 1,968.30
  4. Step 4: Simplify right side
    2,259.90x = 6,141,332.20
  5. Step 5: Solve for x
    x = 6,141,332.20/2,259.90
  6. Step 6: Final answer
    x = 2,717.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.