Home / 3,107.47-4,288.92-1,782.07

Finding the Fourth Proportional to 3,107.47, 4,288.92 and 1,782.07

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Solution

The fourth proportional to 3,107.47, 4,288.92 and 1,782.07 is: 2,459.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.47 : 4,288.92 = 1,782.07 : x
  2. Step 2: Convert to fraction form
    3,107.47/4,288.92 = 1,782.07/x
  3. Step 3: Cross multiply
    3,107.47x = 4,288.92 × 1,782.07
  4. Step 4: Simplify right side
    3,107.47x = 7,643,134.22
  5. Step 5: Solve for x
    x = 7,643,134.22/3,107.47
  6. Step 6: Final answer
    x = 2,459.60

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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.