Home / 2,308.07-3,185.20-1,260.20

Finding the Fourth Proportional to 2,308.07, 3,185.20 and 1,260.20

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Solution

The fourth proportional to 2,308.07, 3,185.20 and 1,260.20 is: 1,739.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,308.07 : 3,185.20 = 1,260.20 : x
  2. Step 2: Convert to fraction form
    2,308.07/3,185.20 = 1,260.20/x
  3. Step 3: Cross multiply
    2,308.07x = 3,185.20 × 1,260.20
  4. Step 4: Simplify right side
    2,308.07x = 4,013,966.81
  5. Step 5: Solve for x
    x = 4,013,966.81/2,308.07
  6. Step 6: Final answer
    x = 1,739.10

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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.